the battle for the property wasn't going her way so she brought in Saul. That one black kid she was doing pro bono work for didn't want to make a deal so she used Saul (or did he initiate that.. i can't remember).

She clearly gets off on this stuff on a level that Jimmy doesn't. Probably because Jimmy consciously leans into it, and she pretends to be above it. But it makes her more dangerous. Jimmy wants to fuck with Howard. She wants to destroy him.