One recent video she made shows her acting out in some group therapy session (she didn't want to sit near the trash can), another video shows her being paranoid about her bank messing with her account and there's a video where she's complaining about the gangstalkers making noise in the apartment across from hers, so there seems to be some support from someone at least. Her free range craziness suggests she's not considered a danger to herself or others although the postal worker may have a different opinion.
She did recently get committed for a week or so because she started writing about suicide on some kind of customer response survey at a supermarket or something.
My favourite little detail here, the "Go Away" sign in the step van window. I would not be at all surprised if the postal worker put it there specifically because of her.