Does she think that you deny there are problem behaviors? So she feels the need to keep bringing it up over and over so that you finally get it?

I know of another parent in our school who kept getting negative behavior reports basically every day from the teacher at pickup. The teacher told her that he's the most difficult student she's ever had. I think the underlying goal was to make the parents break down and medicate him, which the parents finally did after the child had a violent episode and hurt a teacher. Ironicallly the meds did end up helping a lot, but it was inappropriate for the school to treat the situation that way. If a child has a disability it is the schools job to deal with it by getting the child a para if needed, coming up with a positive behavior plan, etc. But they didn't offer any of these special supports, and were't even following the IEP. So the teacher resorted to continually telling the parents how bad his behavior is, trying to get them to break down and medicate.