get it cut...or just get some layers in the back so its not so easy to tangle..or hack it off tomboy style...itll grow back and those who dont know this child dont realize that if she doesnt want you to fool with it, IT AINT HAPPENING WITHOUT A MAJOR FIGHT! i am all for making things as easy as possible for you and for her. if she doesnt want you to mess with it then she looks like a "soup sandwich" anyways...why have it if its gonna be put up in pony tail all the time? (which is the same question keep asking myself but i get too much oppostition as well about my own hair)
good luck with de