Should I Move Back?

I'm thinking about whether or not I should move back to KC to help take care of my mom. Even though she's in an assisted living facility on a memory care floor, she still needs family around because on some level, I've been told, she'll only really recognize my sis, dad, and me AND only feel comfortable with people who really love her and who she really loved.

But....who know's how long this will go on. How much time would I take? I'd have to quit my great opportunity of a job and give up grad school for awhile, and it would really drain me and I've got a lot of shit to deal with already. What do you think; should I move back or stay here?