HH pt with leaking cath

I am a fairly new rn, less than a year. I have a pt who has had a cath for several years now. It has started leaking over the last several weeks. There is still output in the foley bag, but she is wet. We are using a 22 french with a 30 cc balloon. We have even tried feeling the balloon with 40 cc but it still leaks. Any suggestions?
Hmm i dont know what to say other than let her doctor know as seems 40cc for balloon seems large, could be many factors, muscles sagging, bladder spasm, hmm inspect the area closely too just in case. hopefully other HH nurses can give you better suggestions