hhhhhhhmmmmmmm she is probably confused right now. You should be stern with her when correcting her. there is something called nilif (nothing in life is free) that I don't know much about but others here do. I don't know if it applies to dogs chasing cats or not though. there are some people who have used it and it worked for them. You can do some research on it and get more information than I could give you. Also make sure to keep her away from them as much as possible. Find some sort of distraction that can make her lose interest in the cat. that might help.