Your blocks are absolutely precious and being made by Mom all the more so. My mom quilted (somewhat) and she, too, has dementia. I finished one of her quilts and cherish it.
Check out the Greater Hartford Quilt Guild:
http://www.ghqg.org They can probably point you in the right direction. Also, check out the local quilt stores (usually under "Fabric" in the yellow pages, or Google Hartford CT quilt stores).
Welcome to the Board. I hope you decide to hang onto the blocks (even if you never make them into a quilt) as they are a piece of your mom. Please, don't sell/give them away - one day you may regret not having this link to your mom.
Let us know what you do with the blocks. Take care...