It's a lovely natural shot, the only problem is the eyes or the lack of them. All we can see is two dark slits but it is still a pleasant shot. I think a quick shout of the child's name would have given you a split second or two as Rachel glanced towards you. You have to be quick but it would have opened the eyes up. Other than that I would still keep this as a lovely family photo for the album of memories
Cheers,
Rob