I don't know about the size, but I would make the back Flannel so that it will won't be too slick and tend to slide off her, otherwise, she will be fighting trying to keep it on her lap. I am not handicapped in any way and find that I have issues sometimes keeping a quilt covering me.
edited to add: Just saw the comment about the nursing home requesting 36x36. Why not make her a whole cloth...something with a pretty printed design as a test quilt? Then you could make her a fabulous, special one later.
Last edited by Barb in Louisiana; 09-25-2015 at 02:55 PM.