Interestingly, we've got an old friend of mine coming for a quick visit for the weekend. That scheduling has been in the back of my mind, as well as the fact that this friend actually knows my sister, and shares a bit of the same kind of history. Obviously, if the need arises, I'll be out of here in a flash. But, I didn't want to deny this friend her time of escape, which is really what her visit boils down to.
I trust that my sister will let me know if she needs ME.
But thank you for the personal concern - it is greatly appreciated