I know your post is rather old but it seems that maybe the Lord led me to it to answer. This is also my first post.
While, like you, I continue to believe that the Lord is the only answer to the stuggles of this season as He has been to the past seasons...and while I have learned that it is His job---not necessarily the church's----to meet my needs, I do feel lonely in the battle. I also feel alot of guilt about why my mother (for whom I am caring full time---with lots less stress than you have with a mother in law and wife also sick!) has to try to see Jesus in me (because I fall so short). I don't understand why I cannot "go with the flow" and be the servant that I desire to be and that I am called to be in this season. Sometimes I don't want to get out of bed.
I know that God sees it all and knows exactly what He has in mind for me, for my mother, and for all involved in your situation. For what it is worth I extend you and e-hand to hold to say it is going to be okay.
God bless you