When I first got here in Austin, I checked out the community bands in the area. There are several and they are of varying levels. One of those I visited, is a New Horizons. The players were not strong, so I passed on it (although I've considered playing a double in it.) But the band members seemed to be a friendly and interested (and probably interesting) group of people. One lady, bless her heart, when the rehearsal ended went over to put her sax up and connected herself to one of those nose-breathing oxygen tubes. From what I know of the OP, this band, or one like it, would be right up her alley. No pressure, standard arrangements and friendly people. I don't know the logistics involved or what is or isn't available in a broader geographic range, but for myself, in Japan, I used to travel by train i.5 hrs for my sax lesson, the same length for a composition/arranging lesson, and later in Germany, about two hours for a lesson. When I began playing in a community band here, I was also commuting about an hour, round trip. Inconvenient but doable.