Ending

I know there's alot of comments on here implying that Charlotte is being taken to an asylum at the end, but I don't think there's specific dialogue saying exactly where she's going. She has that really nice moment where she leaves the music box in the house, but in context, she's not being restrained or in handcuffs, and no one is even with her in the house as she's getting herself ready to go. I just feel like if she was being arrested or sent to an asylum, it wouldn't be quite so gentle of a departure. Whenever I watch it, I always feel like she's being taken to the police station for questioning, but once everything comes out about Miriam and Drew, thing aren't going to end badly for Charlotte. Miriam and Drew were killers after all, and had a real ugly fate planned for Charlotte, talk about justifiable homicide. Does anyone recall any specific dialogue or lines that say exactly where they're taking Charlotte at the end?