Oh no doubt. Pen was an awful person. She claimed she loved Tom "from the bottom of her heart" and yet it didn't seem to stop her from cheating on him. He caught her and it clearly implied it wasn't a one time thing since she used her sister as an excuse. I feel really bad for Tom.
she was just jealous of cass realationship with dray and it was so clear even she cheated on the them to just satisfy herself and she didn't care for anyone but herself