I like it :) Brittany's parents are horrible though...Poor thing. Thanks for sharing :D

This seems like the spell should be obliviate, rather than confundo. They don't want her to know anything about magic, and so they erase her memory. Her side effects (of her brain being weird and nothing coming out how she wanted) also seems to be side effects of obliviate.

But this is really awesome otherwise!

(your first chapter was my favorite. Christopher Cross, haha, something a Witch would totally say! LOL)