After you rest and return to Milborne, Snagger will be sticking with you, but Kuiper will not. You're going to need an additional party member (maybe two) for the next part of this story. I'll bump the advert for this game now, and then the new character(s) can join you in Milborne.
Also, if any of you are looking for another
Dungeons & Dragons 5e game, I am getting ready to start a new one:
link to another game.