DD 2.5 lashing out and pinching other children's faces, how do make her take it seriously???

[MinkyBorage]

She is so sweet natured as a rule, but admittedly feisty, the problem is that she often lashes out angrily and grabs and pinches faces, it looks really painful, nd she has been known to draw blood, then as soon as she know she's overstepped the mark, she apologises and thinks everything's better. It's like she thinks that her saying 'sorry' makes the other child stop hurting. She really doesn't take it seriously. She does seem interested in whether I'm still cross with her, but doesn't seem worried about it iykwim. I don't like to drag it out for ages, but perhaps I should be cross for longer???
I took her home from the park prematurely today, and we had a serious chat, but she always seems to look vaguely amused by it, definitely not repentant, can she be properly repentnt at 2.5???
I -hope- know she'll grow out of it, but is there anything I can do???
Help!!

when she does it, do you spend more time giving her attention (telling her off, explaining why it's wrong etc) or giving the other child attention (oh, poor thing etc). there's no reason for her to stop if it's turned into a handy way to get mummy all to herself asap.
they all do similar things, ds1 was a horror for biting which was v embarrassing, but it will pass

You're right, I don't give the other child anywhere near as much attention as I give to DD, I suppose I discipline her to an extent, for the benefit of the other parent. If I was to give the other child loads of attention, I think DD my just join in saying "you ok?" etc etc and think it's fun. Oh I'm crap.I'll try that next time though.

At our nursery if one child hurts another in that way they have to apologise and cuddle the hurt child and then go to the time out area for 2 minutes (where they are ignored). The hurt child gets lots of positive attention and cuddles. I agree with the theory behind this - ignore bad behaviour and praise good. My dd (also 2.5yrs) has started pinching me and dh in the face and hitting our faces too, especially if she is angry at something (having to get out of the bath for example). The only thing I can think of to do is to act hurt and upset that she has hurt me, explain how much it hurts and if she does it again (which she typically does) then put her in the naughty area (her cot) for 2 minutes. She then screams and is very apologetic after that. She still does pinch but I am hoping that the naughty area and explaining but will eventually filter through!