Holly needs to remember that she killed someone and got away with it! She isn't the victim, her life shouldn't just carry on with hanging out with friends and partying, not so soon after the death of Rachel anyway, especially when Holly wasn't punished for it.
Holly's attitude towards Cleo and Nathan's friendship is also really off, because before the truth came out she was dating Nathan while he was blaming Cleo for Rachel's death. The two have switched places and Holly had no problem with it when she was alright, so why make Cleo feel guilty?
And Jade has obviously forgotten that Peri is not her friend, so why would Nico be? I love Alfie and Jade, but they really need to TALK to each other more.