No offense, but the punishment is probably just adding to the problem. She's probably so upset and nervous about you finding her doing it that she does it more, because it's more likely a nervous condition. I have one too, pulling my hair out, and most of the time I don't even KNOW I'm doing it. My boyfriend and mother are aware of it so when they see me doing it they tell me to stop. I'm 25 and have been doing this since I was about 12. I can remember the first time my mother found out she was furious with me, I had pulled out all of my eye lashes and she didn't realize that it was a problem, she thought I did it because it looked cool or something! I was SO upset and nervous about her being upset about it, that's when I started pulling from my head instead of my eyes. You can't tell nearly as easily on my head. Anyway my point is your punishing her is probably just making her feel worse. She probably doesn't want to do it any more than I don't want to pull out my hair. No I don't like having a big bald spot in the back of my head, and I don't like people asking what's wrong with my head. I'm sure she doesn't like it either (people constantly commenting on her fingers). And she may just learn to take her nervous habit out somewhere other than her fingers so you leave her alone about it.
tricia.