Advice Needed For 9 year old

I have a 9 year old girl. I do not have custody but she is with me almost full time. I am at a loss right now. Unfortunately due to the legal custody agreement in place, we need both parents to sign off for therapy. I am working on that situation with the slightly involved parent, but I need help now.

It started badly a few weeks ago. She got a stomach bug and got herself so worked up she thought she was going to d**. It calmed down for a few days. But started again when she "had strep". Now she feels fine when she is distracted though. (I.e was fine at the water park right after telling me she had strep, until we were in the parking lot leaving).

It has now turned to just I'm sad. It's not for show. I walked into her room to check on her last night, and she was just laying there crying. I laid with her until she fell asleep, but there were a few points she just had quiet tears streaming down her face.

Idk what to do to help her. Obviously working on therapy. But does anyone have suggestions in the mean time. Regardless even if custody is sorted and paperwork obtained. There is still wait lists. She had Medicaid....