Only a sense of loyalty to the past kept her from completely chucking out her previous plans. When she took the list of Rodolphus" allies to Ron for independent verification, she put his life and his family's life in jeopardy. It wouldn't take much investigating to discover that her former best friend was in some way involved in her quest to rid their society of those that offered their allegiance to Rodolphus. She was already certain that Draco Malfoy knew that she'd met with Ron at least once. Likely that bit of information had already made it to Rodolphus" ear.