It is so nice to see that you are also really considering your own wellfare. Often this can get shoved aside while getting more and more overwhelmed. I have read about that happening with caregivers. A visit with your sister is not a bad idea, you could use a break and she "is" probably lonely.

Let us know how you make out, you have this thread going if you need to vent and get support.

((Hugs))
OE