Normal
I just googled nocturnal enuresis and methamphetamine use. There is the connection between bedwetting and drug use across the board; and I saw a journal article specifically about Ritalin and bedwetting. The connection you make makes sense: she is going without sleep for days and the drug and intense activity is taxing her body incredibly. She must be sleeping so deeply that she does not have any control over what would be voluntary functions such as holding ones urine.