Something tells me that the MIL could do no right and the DIL can do no wrong. Apparently the quilt was good enough for DIL to want to hang it on the wall.....
I have worked out the kinks with my MIL (long hard road) but we have made peace quite a few years ago. We have set ground rules and as long as we follow them, all is well. Once a year we have a date to go to the locak quilt show. She crochets, but appreciates quilting.