As I recall, she was shot for voting for a sales tax for the baseball stadium.
The voters repeatedly rejected the tax increase. My recollection is that she figured a way to form a “Special Stadium District Board” that was not elected, managed to appoint herself to it, and then moved to enact the tax increase for the stadium. She got very rich while in office. It was after that that she was shot. A local paper even said she deserved it.