Police can't just detain someone indefinitely, so its understandable.
Also very smart of her to publicly say when she will be home after a guy tried breaking into her home
-
This vtuber also got doxxed/stalked and she's actually taking proper precautions
May be that they're getting charges on the guy put together and they just want her out of town for her safety until the paperwork is finalized and they've got him back in custody for good. Particularly since breaking and entering an occupied home with intent to harm can be a highly penalized felony without bail if you play your cards right, they probably want to make sure he's not getting off on a misdemeanor charge or something.
That doesn't mean she's not being retarded, but it's not entirely unheard of.