Oh, dear. I hate hearing this. I have such a soft spot for little girl birds.
I do not doubt for a minute that you will do everything you can to continue taking the best care of her. Because Jules is getting to be a senior birdie now, you may have to start adjusting her cage to make life easier for her. I came across this video a while ago and I thought this woman was amazing at how well she looked after her 64-year-old sick bird by adjusting its cage to help it get around. You mentioned that Jules has not been hitting her perches – if that continues, or she later starts having problems with balance, etc., there are some ideas on this video that may help.