I am at a crossroads as well; I really want it to work out in your situation, and in mine.
BTW, caretaking for your elderly parents is difficult, draining yet rewarding, no matter how often you are there. Just make the time you are there count. I know she appreciates it. Looking at one last sunset, hearing how he wished he had gone to Paris,eating a cup of soup on the porch, cleaning his bathroom, washing her windows so she could see the birds or just brushing her hair are things that I will always remember as service to my parents before they died. They are the things that helped us reconcile some of the "stuff" between us and get it all out there. It was cathartic.