I'm not really sure but probably quite a lot. What I have seen Her ears will pick up when she has super hearing and like antenna's. She sucks in so much energy all around her before blasting it. I think my guess is she absorbs it before sending the explosive blast and yes and probably she can control it with mind of how to use it. It's almost like she has some type of kinesis I wouldn't say telekinesis but I think it might have something to do with electricity more because if you look at it carefully her ears pick up like antenna's and sends a electric shock waves. The brain cells in our brains is what keeps it going and our nerves in our body and they are like electricity because it send out information to our brain. Our brain can carry so many a day it's crazy.