She appologised for the argument not rasism which she denies.
Trouble is she is unpopular with some and Derry is 'fit', so if he went whinning to producers or Tulisa who made sure it got into the tabliods Derry is more likely to be believed.
Sounds to me like Tulisa's lot are a very sensitive, precious bunch. Last week one or all of them were being victimised by Mishca, then tiny totts or whatever the second worst girl group on XFactor were sobbing over comments that they went looking for, now poor little Derry is a victim of Kitty.
They need to get over themsleves, if they put more energy into the music they might be better than they are.