LauraKHi Sue,
Perhaps you could teach her to bend forward a bit before urinating to reposition her bottom and direct the stream downward?
One of my girls had this problem for a time. I have the cutest picture of her in her pajamas on the potty, leaning forward with her elbows on her knees and smiling. Don’t know that it had a thing to do with CAH - just one of those weird kid things. It resolved with time.
LauraK