She was a child man of course she ain't have no control lol. Ima stall her out. But the way things turned out when she was grown was cuz nobody helped her harness it. She been crying out for attention her whole childhood (that book was another cry for attention) and instead of listening to her or tryna work with her later on, they not only take her powers away, but they pretty much isolate her from the rest of the family on top of it. She got treated like she didnt exist the majority of her life. So yea when she finally gets some attention she goes overboard. But it wasn't unwarranted or hard to understand why.