Is she in love with him? Or wtf is her problem

It's not that kind of love—it's not even love. It's obsession. He's nothing but a possession to her. His wellbeing doesn't matter, only her sick desire to "mother" him. That's why him being struck with a curse gave her joy. Anyone feeling love towards their supposed "son" would be devastated.

She's like those Munchausen syndrome by proxy "mothers."

Ooh, thank you for explaining that for me.