"I don't know about change on a wide scale..." Isabella thought about it for a moment. It made her wonder about her father. A Slytherin who "changed", married someone from Ravenclaw even. An odd combination. It made her wonder if he ever changed. If he wasn't doing questionable things behind everyone's back.
"Don't look at me to help much. I'm okay at potions but Polyjuice potions are a pain to make."