Rimehill

The barony of Rimehill is ruled by Rolar Copeland. The town is growing, since silver has been found in the nearby hills, producing much-needed funds for the Grand Duchy of Silverymoon. About 5000 people live in Rimehill.

Rolar is already an elderly baron, 72 years old. His son Adriel already handles daily affairs, but Rolar still handles the decisions. Adriel is married to the Baron of Deerwater's daughter, and they have a child together. Adriel's younger brother, meanwhile, is responsible for the town's defense.

The town is built atop a hill, some distance east of the road, toward the Nether Mountains. A large castle rises on the town's highest hill, on its southern edge.

At the foot of the hill are farms, surrounded by a woodland that thickens into Moonwood west of the road. The town is a mixed collection of extremely narrow streets, stone and timber houses. The town isn't very old on a historical scale. Here and there are smelters, where silver is separated from lead and processed into ingots. The ingots are, in turn, shipped on to Silverymoon, where they're minted into coins and other valuables.

The miners' guild holds the strongest role in town, right after the baron. Second comes the brewers' guild, since the town has several taverns for thirsty miners.

The people aren't especially wealthy, and people have come to the town from many directions. There's all sorts of folk among them, including fortune-seekers too.

Inns

Demon and Frog — near the north gate. One-story brick-and-timber. Massive tables, small spartan bunk rooms. Run by old Eryell who never seems to sleep (she catnaps constantly, highly capable but her memory suffers for it).
White Satyr — near the west gate, popular and often packed. Large stone building with a stage for performers. Run by Ralf, muscular middle-aged ex-miner who got wealthy enough to change careers. Likes wrestling and will happily accept challenges.

A growing city of ~5,000 built on a hill east of the main road, toward the Nether Mountains, where silver has been found in the nearby hills. The silver is smelted locally and shipped as ingots to Silverymoon for minting. The city is a jumble of extremely narrow streets, stone and timber buildings, smelters scattered throughout. Not old by historical standards. Population is mixed — people from all directions, including fortune-seekers.

Baron Rolar Copeland, 72, still makes decisions but his son Adriel handles daily affairs. Adriel is married to Deerwater baron's daughter (which makes him Hebert's son-in-law — useful connection). They have a child together. Adriel's younger brother is responsible for city defense. A large castle sits on the highest point of the southern hill.

Guilds: Miners' guild is the dominant power after the baron. Brewers' guild is second — the city has several taverns for thirsty miners.

The Night Watch Presence

Rimehill is a natural stop on Maren's talent acquisition route between Deerwater and Silverymoon. Silver mining towns attract desperate people from everywhere, which means unregistered magic users turn up here with some regularity — people using minor abilities to find veins, to survive cave-ins, to cheat at cards in the taverns. The Night Watch has an interest in cataloguing all of them.

I'd suggest Rimehill has a single embedded agent rather than a delegation — someone who has been here long enough to seem like a local. A good candidate:

Oswynn, nominally a clerk in the miners' guild, handles dispute records and accident reports. He's been here eight months. Quietly well-liked, helpful, unassuming. He has a small notebook. He reports to Maren. He is not a combat threat — he's a watcher and a recorder, not an enforcer. But he knows the city's people extremely well at this point, and if he recognizes Hebert arriving with powerful casters, that report goes out fast.

Rolar Copeland

At 72 with a son handling daily affairs, Rolar is in an interesting position — still nominally in charge, aware his time is ending, watching Adriel with a mixture of pride and anxiety. He's old enough to remember when the Watchful Order was less assertive in northern politics. He doesn't trust them, but he's never said so aloud because they're duchy-sanctioned and he's a practical man.

He might be the person in Rimehill who most directly tells the PCs what he's observed — not because he's an ally necessarily, but because Hebert's return gives him reason to speak. He's been waiting for someone he trusts to talk to.

The White Satyr as a Scene

Ralf's inn with its stage is the obvious place for Rudi specifically — a bard 13 walking into a venue with a performance stage in a packed miners' town is an opportunity. A performance here could:

Generate goodwill and loose talk from drunk miners
Flush out Oswynn, who attends everything social and will want to know who these travelers are
Give Lambert and Myrbec time to poke around separately
Let Hebert have a quiet drink with Adriel in a corner booth while music covers their conversation

Summary of what Rimehill adds to the journey:

Emotional weight: Hebert's family is here, the reunion happens on the road south
Intelligence: Rolar's quiet observations about recent Night Watch activity
Complication: Adriel may be compromised without knowing it, through Oswynn
A watcher: Oswynn clocks the party and sends word ahead
Color: the White Satyr, Ralf's wrestling challenges, the smelter smoke, the crowded narrow streets

Sera Hebert - Camryn Hebert's daughter, and Adriel's wife

Sera is probably mid-to-late twenties, married to Adriel maybe three or four years, the child is a toddler. The marriage would have been arranged or at least encouraged during a period of relative stability and prosperity — two neighboring baronies strengthening ties through family. Perfectly sensible politics that also happened to be a genuinely good match.

Then everything went wrong in quick succession. The orc invasion, Hebert's disappearance, and Adriel suddenly running Deerwater's affairs from a distance while also managing Rimehill's daily business under an aging father. That's a lot of pressure on a young marriage.

She knew her father was missing. The official story would have been vague — he left for Silverymoon and never arrived, no word, no body. That ambiguity is its own particular cruelty. Not knowing whether to grieve or keep hoping. Adriel probably tried to protect her from the worst of it while quietly making the inquiries a son-in-law with resources would make. He got nowhere, because the trail led to the Watchful Order and that's a wall most people don't push against.

Sera may have pushed harder than Adriel was comfortable with.

The reunion scene with Sera and Camryn:

Hebert walking through the door unannounced is the stronger choice dramatically. Word might reach the city that a party is approaching — gate guards report to the castle — but not necessarily who's in it. If the PCs ride in with Hebert in the middle of the group, he might arrive at Adriel's door before anyone's thought to send ahead.

A few beats worth having ready:

Sera's first reaction is probably not tears. It's probably anger — the specific fury of someone who has been frightened for months and is now confronted with the person they were frightened for, alive and walking. The tears come after.
The toddler has no idea what any of this means and is just delighted by the commotion. That contrast can be quietly devastating if you let it breathe.
Adriel's reaction to Hebert is more complicated — relief, yes, but also the slight discomfort of a man who has been making decisions in someone else's name and now has to account for them.
Rolar, if he's present, will probably say very little. Old men who've seen a lot recognize the moment for what it is and stay out of the way.