My dd has a significant bruise on the outside of her knee from slapping her glove. She was taught by an instructor to use the slap as a timing mechanism. Obviously this is a concern. Aside from telling her to stop doing this, which I have on numerous occasions, I'm in need of guidance. She's going to use a sliding pad to hopefully prevent further injury, but we need to fix this problem. I'm thinking I've read that her thumb should lead her glove to a light touch to her thigh. Any help would be appreciated.