Ok this is my first post and usually don't say much but on this...I would have to say a comfort quilt for now. I suffer from depression at times and believe me it doesn't take much to triger an attack. If your sister n laws mother suffered then chances are she will to. Even if a trace it can spiral into something worse. Better yet, with all the sadness on her mind you may even ask her if she would like to participate in the making of the quilt. If she knows she has something to look forward to it may help her along in her mental recovery. I can't imagine losing my mother let alone in the way she lost hers. I think anything kind would be a beautiful gesture.