Even with Rodolphus" attack on the Dolohov home with his cohorts, there had yet to be a grab for power. At least not officially. It was telling to a lot of the villagers still living in Hogsmeade that the Dolohovs were scared away. Hermione knew that it was a sign of weakness that they hadn't stayed to fight, but she didn't care. With her mind still healing from the disgusting charms, she wasn't at her full strength. She would be nothing but a liability to Antonin until she was ready. And they had their son to think of. Despite Rabastan's assurances that their son wouldn't be harmed if she chose to join their side, she didn't believe him. She'd witnessed him kill children just as easily as grown adults.