Like I said - they're just students. Every fraternity would like to have beautiful girls at their parties - no matter if they're part of some sorority or not. Heather is there because she's Tommy's GF. It's possible Ashley was also invited by some of DIKs.
HOTs were needed just for pledge ceremony, for CUM-petition.
Ok i gues that what was what confusing to me. i thought all the girls mc needed to interact with where either part of dik or Hot so if they where not part either then why did mc needed to interact with them in the first place ??
Mc did not need to interact with Dawe girl either. and she was a Hot girl too.
Maybe dr pinkcake put them their if you where on the chick path then at least you would be able to interact to some girls since all other Hot where offlimit for a chick class. then that would be hardly an party for mc for winning the cumpetition.