Pay her for the work she’s done and send one more message to be clear that you do not want her to come any longer. Pay more for professionals. I had a lawn company that threw a rock through my sliding glass door. It was clear that they could not replace it and I really didn’t want to be an asshole. But I also didn’t want to use them any longer. Now I have a guy that was a little more expensive but he’s insured. And they have a freaking truck full of equipment. When it’s 100 degrees, they get on their standing mower and zip, they are done quickly. They do a great job and I generally never keep up with when they are going to be there because I don’t have to. But they ain’t mowing the lawn for $10. And I do offer them waters and beers when it’s hot.