Hello mumsnetters! Am hoping that you all can give me some tips on how to deal with my 2 DD's! They are seriously driving me mad! DD1(4 nearly 5) seems to contantly aggravate DD2 (2 nearly 3). She seems to really enjoy it! She doesn't even seem to care when I discipline her. Tried reward chart, but hasn't worked! Of course DD2 gets angry and frustrated and has now started to hit scratch and pull hair. DD1 seems to find this funny and laughs! DD2 has always been so well behaved before, but has now started to become quite viscious. Tonight she had an almighty tantrum and hit and pinched me! Am fed up of constantly playing referee and seem to be always telling one of them if not both of them off! Any advice gratefully receiced!