Thank you all for the advice. To give a little more detail, each tenant has 1 spot, not assigned or anything as i'm not asking my manager to act as parking enforcement. The tenant has a car & a motorcycle. He doesn't use a spot for the motorcycle. The picture I got from my manager showed his bike actually parked in the neighboring vacant houses yard but problem tenant claimed it made it a tight fit to get into a spot.
Problem child pays her rent on time but I have had issues. She has cussed my manager out more than once; flushed stuff down the toilet causing a plumbing bill; & constantly leaves cigarette butts on the ground outside despite being a non-smoking property.
My plan is to, as suggested, give her options. I have talked to motorcycle man about keeping the parking spots clear. I'm going to explain that to her as well as infor her that threats & treating my manager like cap will not be tolerated. As her lease is up, I will gladly refund her deposit as long as she leaves the property in good condition.