So DD has been complaining of heel pain off and on for a few weeks now. We've been icing and giving Motrin when neded and her coach has been taking it easy on tumbling and vault. But this week her coach told me that she thinks her arches are falling or she is flat footed. Today she stood her up on a table and said that the back of her foot is pronating (i hope that is the right word!) because of it. She suggested that I buy some KT tape and perhaps some inserts for her shoes. I ordered the tape she recommended off of Amazon. I'm going to look and see if I can find some inserts small enough for her the next time I get to an actual town with a Walmart. Gotta love our small town! 
She didn't seem to think I needed to rush her to the doctor, but I wanted a second (or several) opinions on that. Suggestions or thoughts on what to do?
DD is almost 8. Just a few weeks shy and has been in gymnastics for 2 years. She has just started more advanced tumbling regularly (back tucks, front tucks etc) so I assumed the pain was just from more intense tumbling.

She didn't seem to think I needed to rush her to the doctor, but I wanted a second (or several) opinions on that. Suggestions or thoughts on what to do?
DD is almost 8. Just a few weeks shy and has been in gymnastics for 2 years. She has just started more advanced tumbling regularly (back tucks, front tucks etc) so I assumed the pain was just from more intense tumbling.