Musically Pink

Needing some prayers... and advice.

Our foster daughter... Madi, the one we are hoping will be adopted soon has been wetting her pants every day this week (during the day... not at night!).  She seems to just wait until the last minute and cant make it in time.  But she is 8.  I dont want to embarrass her by putting her back into pullups, but sitting in pee pants all day is very bad for a young girl!!  I read it can cause bladder infections and urinary tract infections, and thats really the last thing this girl needs right now! 
If it is emotional (which is a definite possibility) I cant seem to find the cause of it!  Usually I can point out a trigger for her emotional behaviors, but it seems that this was an ok week... no major or minor problems or setbacks or anything. 
We are leaving for the mountains tomorrow morning and I really dont want to take 12 pairs of pants and undies along for 2 days, but Im afraid I may have to!  Right now, she is on timeout for her episode this morning and Im making her go potty every 30 mins.  (Thats going over like a lead balloon).  Any other advice!?!  (Oh, we are pretty sure its not an infection... she had them before and has no symptoms... and isnt even going that often!).
Please pray for her.  If it is emotional then finding the cause of it so we can work on it is the best thing, but she cant express her emotions or doesnt want to, so its sooo hard to figure stuff out!