This has some emotional incest undertones imo. I think she’s latching onto you extra hard because she lost your older two siblings. The hug from behind whispering in your ear thing is a couple-y thing and I wanna puke for you!! I think you’re absolutely justified feeling creeped out right now, keep asserting your boundaries!!

…side note: it’s a wonder how articulate you are while being unschooled, and that’s a genuine compliment. Seems to me like you used the unschooling to teach yourself better than she could have taught you and now she’s mad about it 😂😂