It would be very helpful to know what she is in therapy for. Is it adhd?. Also does this happen more often at certain times of the day? Only at home? School?
Okay, truth. This was me as a child. And I still have rushing moments where I'm like 'whew, I made it' because I wait too long. I hated to take time out for it and always thought I had more time than I had. Just keeping it real here. ha. I'm an adult woman now and all is well. I do make it to the bathroom in time. (while I am a bit scattered sometimes, I don't have add/adhd but am just an energetic girl. :>)) This sounds a bit more than something that simple though.
Agree that peeing every hour would be unusual. She needs a physical. At 9, she would not want to pee herself. Emotionally speaking, kids are aware then and that's not too cool. My son when he went to first grade, after a few years of being potty trained, digressed a bit. He had a few accidents at school and wet at night. I took him to the pediatrician. For him, it was determined emotional. He was in his first all day school experience with increased expectations. He was stressed. We worked to distress and relax him, he went to bed a half hour earlier to get extra sleep, and it was a brief period in time. But his wetting was a response to stress. AND he was mortified by it which is a normal reaction. He was 7 at the time I think.
With the thought that maybe something inappropriate happened with her and there is a step dad in her life and weird circumstances surrounding that (whether something happened to her with the step dad or another relative or she longs for her own dad to be in her life more??)-- therapy seems a good idea so am glad she is getting that. If you don't like the therapist, find another. There are good ones and bad ones.
Good question though if this is happening at school or at home. Perhaps not just a psychologist but involving a psychiatrist would be beneficial too.
But get the issue of urinating so often checked and make sure nothing medically is going on. good luck