Abby's Bad Behavior

by Carol
(Bayside, NY, USA)

My beloved Siamese, Abby, has a bad habit of jumping on me and scratching me. It can happen when I tell her something she doesn't like, like "get down" or it could also happen unexpectedly, for no apparent reason. She often does this from behind my back, like it's a game and she's hunting some prey. She has hurt me and drawn blood at times. The behavior seems to have increased lately and I feel like I can't trust her. I adopted her when she was 1 and she's 3 now. She's smart, playful and affectionate also. Just this one terrible habit. Any ideas or suggestions?