I'm a photog who's written many hundreds of critiques on photosig.com With that said, here's my $0.02
I think it's a charming photo that really shows the love between mother and daughter. I think composition is good. The hands, lips, and woman's ear are all on a diagonal, and this works well. The photo looks a tad underexposed and the blackpoint is very heavy. I'd like to see some rich dark shades rather than solid black.
The region of the child's lips is very dark. It seems to get lost in the photo, and yet this is the part that makes the photo charming. It's hard to see the child smiling. I suggest trying some dodging here to brighten this area and to draw more attention to it. The same holds true for the child's eye.