Yeah, this theory of the tying doesn't make as much sense to me as what I've read from several other posters. They suggested that she could have tied her hands and then stepped through them, to move her hands from tied in front of her to tied in back of her. If she left enough slack, it would pretty straightforward to tie her hands, then tie her feet, then step through her hands. I'm assuming she'd have to have placed the noose on her neck before starting to tie her hands, though maybe there's another way to do that too.
I know from reading Ocean's post that people who commit suicide by hanging do tie their feet. I don't understand why, and I feel like a lot of other "non rational" suicide behaviors can be understood, if only in the mindset of someone who's in a lot of pain. For example, committing suicide in the nude could be a way to link death with birth, sort of like leaving the world as you came into it.
Perhaps, in the end, it doesn't matter why she made the choices that she made, only that they were the expression of a tremendous amount of pain.
The more fantastical, fictional conspiracy theory side of me has thought that BigPharma + the deaths of the child and girlfriend of JS could have something to do with some revenge against JS. But I'm pretty sure that's just a tv/book explanation, and not what happened here.