The problem is Trish doesn't seem to want to get rid of Tony, she still naively trusts him, this has been established time and time again. This last episode she seemed to let on that she thinks she can drag him to the end, and beat him, because people find him annoying. Which you yourself disagree with. Perhaps she…

“I didn’t break promises, I did it for a reason.” I genuinely don’t know what this means."