Bathroom battle

Oh I SOOOOOO thought I was out of the wiping hiney stage and I know I am we are just having a setback, but I need some wise council from all you moms out there on how to handle the 4 year old holding it in. For the last week she has been on this thing where she is holding in her poopie, which therefore leads to messes in panties and constant wiping and cleaning dried up (well you know) off the forementioned hiney. I'm extremely tired of doing this- to say the least and she refuses to stop. Nothing I've done so far to persuade her to start being a big girl again has helped, so send me your smart saves here and I'll be ever so grateful!!!