C.G.
It's common for people with kidney/bladder issues to be on long term antibiotics so that is not concerning. What I would worry about is the discharge. Although it could be yeast, yeast discharge is typically white in color rather than green. I would take her to the doctor ASAP to make her more comfortable. Most up to date practitioners these days are prescribing probiotics with antibiotics, ask you doc about this and if he is unaware of it you shold consider finding a doc with more up to date practices.