I think Harry's treatment of Bonnie will come back to bite him. She will realise soon how differently she is treated than Maggie is. Maggie is publicly acknowledged as Harrys daughter to his family and friends , she goes to school, hangs out with Mouse, has her own room, will get xmas and birthday gifts. Bonnie doesn't.
Theres no way thats not going to cause resentment of Maggie by Bonea. We have seen a big bad who locked away and hidden by her father, look how that turned out.
WAG about Bonnie and a body. She can possess people and will eventually find a way to Amanda Beckitt/persephone, it's going to look as though a miracle has happened and she has a reawakening. Harry trying to stop her puts him in Marcone's crosshairs.