Stella thinks Warrington is hot, despite her belief that her good pal Hamish is not. She's weird. She prefers Cassius' hair. I am sure they know each other through Hamish, but maybe they could also be Prefect patrol partners???? Because that could be hilarious.
And Amelia, as you know, is really thankful Cass is here because he is one of the few tolerable people around, despite having the bad taste to be friends with her brother ;)