I have a 9 week old Maltese x Shih Tzu who loves biting trousers & shoes. She attaches her teeth to them and growls and shakes her head. I know she's probably only playing but everthing I've read says I need to stop this behaviour before it gets worse. I've tried a high pitched "OW" followed by a stern No, tried walking away and ignoring her, and even try to shift her attention to her toys but nothing seems to be working. Am I doing something wrong?