Is this possible?

I did the Dawnguard DLC as a werewolf, siding with the DG. That means I've wiped out Serana's dad, the castle, etc. Now she hangs out at Fort Dawnguard. But... I'm tired of being a werewolf. I never use it and would rather be a vampire. I know I can just ask Serana to turn me and she will.

However, doing that while she's still living at the Fort seems like a bad idea, as it would be pretty hard to go get her again unless I massacre the Fort's inhabitants. I assume they'll attack me when I arrive there as a vampire. And there's nothing at Castle V for Serana to do, since it's empty now.

Can I move her to a player house? Or something? Any way to get her to stop going home to Fort DG?

Edit: forgot to mention I'm on PC, so if a mod or console is the answer I'm game.