There was only one enemy she wanted to get rid of. Rodolphus had been alive entirely too long. If it was possible to do so without getting herself hurt, she would've gone searching for the wizard to finally put an end to one of their miseries. She wasn't foolish enough to believe that she would win without question. He had been a Death Eater before she was even born and during some of the most dangerous and tumultuous days of their Dark Lord's life. Trying to kill him without being fully prepared could easily become her own death sentence.