Holly Hart was played by Sandra Huggett from episode one in March 1997 until 1999, when she and the majority of her family were killed in a boat explosion. Holly had a lesbian relationship with bisexual Susie Ross, who was played by Tina Landini from 1997 until 1999.
For their story go to:
http://ls-watch-online.blogspot.com/2009/05/family-affairs-holly-susie-199798.html