I was a bit surprised. First of all, she's not failing any classes. I'm a pretty harsh grader but she is still a solid B student. Secondly, why on earth did she think she was failing!
So we sat down for a Parent/Teacher conference and went over grades together. After reassuring my child that she was doing fine, we talked about what she needed to feel successful.
In the end we decided to change how we did a few classes. We divided her classes into ones she was comfortable doing on her own with mom just grading at the end of each unit and those mom needed to be more actively involved in.
Now she has "student led" and "teacher led" classes. This gives me a bit more work during the day to day schooling.
But seeing her happily mastering new ideas and concepts makes it worth it, after all this is why we homeschool.