For me the best way to respond is to recrop and slightly reprocess your image. I do think there is an emotional connection in the image that gives it worth beyond simply those who know the two people in the image. I see the love of a mother/grandmother for her child. I do think that going B&W is a good way to go so that the distracting colors are removed from the essential content of the image. I toned the image as I think it gives the image a more emotional feel. I used to never tone my images and then started at first with more subtle ones and now go bold. The tone I used here is one that replicates the Silver Gelatin look.I really like how you've reprocessed, cropped and toned this shot.... However - perhaps the reprocess has also really highlighted the hand - which was perhaps a little problematic already - lightening the hand might help?
I also agree that there was already a good emotional connection in the original