DD1 is 2.5. DD2 is 15 weeks. transition has been pretty good, she does like the new addition and holds her hand and kisses her etc.
yesterday she bit DD2 VERY badly twice. first time was on her head and I utterly lost it. She spent a good ten minutes in her cot and then came down and said sorry to me and to DD2.
A few hours later (the mark is still on DD2's head) and DD1 bites her again In Front Of Me!! she immediately says sorry - i say this isn't good enough (she can't just bite and say sorry and expect it all to be ok) and when she wouldn't sit on the naughty step she ends up in the her cot. Again.
These aren't the first times that DD2 has been bitten - but not so bad, and we've reacted every time to say it's not a nice thing to do. DD1 has been bitten herself by other toddlers - she knows it hurts. I don't think i help matters - when i see her biting her my instant reaction is to shout at her, shove her away and tap her on the legs - it's a reaction and i think that's what she's after. But she's biting my little baby.... - what am I MEANT to do?!!!
I just don't know what to do. I've tried being angry. I've tried being calm and explaining it. Yesterday I said "you wouldn't like it if Mummy bit you would you" to which she offered me her arm to bite - which i did (not hard, obviously). She's been smacked. We've done star charts.
I don't like this vicious little girl and want my gorgeous one back...
please help me