Tap it wherever you find it! Glad you have a social worker and glad you are heading to the woods for decompression!
How about hobby networks? If you are a hunter, or if she's a (quilter? Dancer?) whatever -- could those networks of people also be tapped for helpful things? Mow lawn, get grocery, check mail -- whatever.
Or mailing lists and online forums for kids health things in your area? He's too old for baby playgroup lists... library? I know mine sometimes puts on alzheimer caregiver things so putting on things like kid health stuff isn't too far fetched. Maybe your county extension?
Just trying to brainstorm.
Keep shining on over there! It sounds like you actually do have lots of community resources -- just trying to connect the dots maybe?