I like the over all shadows and tone of the second one, but if it were me, I'd clone the wave that ends above her head so it went all the way to the end of the frame. It draws my eye right to it. If it were a line across the photo, it wouldn't draw the eye. Just my opinion.
Lord grant me the strength and courage I need to get through this day.
I like "A" better. In "B" the wave is distracting and the babies pose looks awkward to me, more like it just felled down on her face rather than sleeping. "A" just seems to be more natural for sleeping.