Don't discount the replacement Vicki. My 90 year old mother had a knee replacement this year and was only down for about 6 weeks. She is walking 100% better now. I know an ankle is a much more difficult proposition than a knee, but it's at least worth researching. And I think who the surgeon is makes a big difference. Mom's is pretty well known in this area and does excellent work. Do your homework and you may find it a viable solution.
Regardless, take care.