I generally liked Nadia but there are still a lot of things I didn't like about her.
First of all, I feel like she was an 'enabler' for Perez like Katie H says. If everyone had just ignored his antics for a while, he would have calmed down and stopped being a massive jackass and probably would have integrated more successfully with the group after. Because Nadia was there though, Perez continued acting out.
I didn't like he clear Bias of Katie Hopkins. She obviously went in there with her pre conceptions and judged Katie H on her opinions. Somethings I admire about Katie Hopkins is that even though she disagreed with peoples opinions, she didn't let that get in the way of how she got on with them.