External beam radiation (EBRT), which is apparently what you had, has many more immediate and long-term side-effects than does vaginal brachytherapy, where the radiation is very short-range, and really only affects the vaginal wall. This is clear both from people on this forum and from clinical trials on these procedures. So your experiences probably aren't so relevant to @marceyw's decision.

I'm sorry that you're still having side effects and that your cancer came back anyway. That's really rotten. (I know; mine came back 10 months after I finished chemo and brachytherapy. I have been wondering if my outcome would have been better if I had had EBRT, and I'm working on trying to find someplace where I can get it done now.)