I thought I was feeling better on lexapro but having a bit of a meltdown.

12 year old daughter has been sick with joint pains and fevers for nearly 7 months and thought she was starting to get better, but now that the beginning of the school term is near (we've just had summer hols), her temperatures are going up and she seems to be creating new symptoms. She is moody as anything (probably normal for her age!), has a really bad attitude and would say 2+2=5 if I told her it was 4. She fights non stop with her Dad and I. I cant bear the thought of the continuous battle with school, aches and pains and explaining to my work that I cant make it in because my daughter is sick again and wondering if she's faking it to get out of school, which I feel really guilty for even thinking it.
To top it all we have just had a holiday with my parents during which she argued like usual and my Mum told me that it if I had parented better when she was younger she would not be so bad now.

This is my Mum who has always been my role model and almost a best friend. I feel really betrayed and as though there is no-one I can turn to. And its really difficult to type when I cant stop crying!! What I really feel like doing is getting into the car and driving away from it all which wont cure anything.

Sorry for babbling, but need to moan to some-one.

Thanks for reading.