Could be related to what happened to Fraction. Not saying she makes all of her professional decisions based on her husband, of course, but when your spouse has a bad experience with a publisher, I can see why you wouldn't want to work there anymore. She also seems to be good friends with Chelsea Cain, who just recently went through something similar as Fraction at Marvel. So yeah, I wouldn't be shocked to find out she's not crazy about returning to Marvel because she doesn't like the way people she cares about were treated.