Many of you have read threads and posts by myself concerning my "child" Squeak and her unusual behavior. I need some advice on a problem that has existed somewhat all her life, but has gotten worse with age. She can be the most loving cat, to me, at times, but then for no reason whatsoever she will bite. HARD!!! She is also easily agitated. She likes to lay in the bathroom sink of the mornings as I get ready for work, which usually goes fine until you start to wipe the counter. She will smack my hand and try to bite every time! I don't know if it's the wiping motion or what that aggravates her. I would greatly appreciate any advice on why she might be this way, and how I can break the habit of biting. I'm not even sure if it can be broken at ten years old.
Thanks!

Paula