I posted this a while back in the general discussion forum, but I figured this was the more appropriate place for it.
I can't send Curie to any of my settlements. I've maxed out her affinity for me, completed her companion quest, pursued the romance option, etc. My charisma is almost maxed out and I have basically all of the settlement building perks. No matter what I do, Curie will not go to any of my settlements. She just goes back to Vault 81 and stands by the doctor's office.
When I choose the 'dismiss' option in the dialog and select a settlement to send her to, a notification pops up saying that Curie is going to that settlement, but then she just runs back to Vault 81 anyway. I've tried doing this from both within the boundaries of the settlements and from random places on the map. If I'm in Sanctuary, for example, I'll dismiss her to Sanctuary and a notification pops up saying "Curie is going to Sanctuary", but instead of just staying there, she goes back to Vault 81. I've tried it in Vault 81. I'll send her to a settlement, and it says she's going to that settlement, but she just stays in Vault 81.
This isn't a settler capacity issue or anything like that. I've tried sending her to nearly empty settlements with no success. I've done some searching and it sounds like quite a few people are having this issue, so hopefully Bethesda is aware of it.