Okay so I read something in the link that I don't read agree with. I don't want her able to explode people with her barriersXD sorry if I'm being annoying right now. I honestly can't decide what to do. I think I want it to where she creates the force field from energy, so basically manipulating energy to create a force field. Does that make sense? I'm not sure where that would go. But yeah maybe a bit based of her. Would that be a bit op though?

So basically Serenty creates force fields from energy. Any damage the force field takes, Serenty takes. She can also reflect things that the force field so she can save her physical strength.I think that's pretty simple.it involves concentration so if she's not focused it doesn't work. I guess her power might show new properties of it as she gets stronger. Maybe change the shape of her force field but for now we'll keep it simple.