DD2 is little over 2 weeks old, since she was born DD1s behaviour has spiralled out of control. kicking and spitting, hitting me, there was an incident earlier today with the biscuit tin and the fact she absolutely wouldn't listen, sheer defiance. She sat there while I was asking her not to do something, looking at me while she did it anyway.
How the hell do I deal with this? I'm trying not to get mad.Cause I don't want her to feel I'm ganging up on her, I'm more tolerant lately as feel like I should be easy on her after DD2s arrival. What would you do? 