...can't she kick her out of her castle. It's not even blondies house. Just kick her out.

i think the grandma would be extremely confused (she did call all of them her children) and explaining it would be difficult considering she only has her past life to back up her claims, itd prob jus seem like super random and make her out to be the villain in the end

That's true but it's her gran, surely she should be able to be like trust me I'm your granddaughter. But yes this is true that she would be made out to be a villain.