1 & 2 these are way blown... Probably a good 2.5 steps. Also on 1 you can't see her face and 2 the face she is making is awkward. I would reshoot instead of trying to fix these in post. Catch baby's attention with a feather or something to make sure she's looking at the camera.
3 cute, makes me uncomfortable with the baby so close to the water, but that's just MHO. It's also overexposed. You get a peek at Mom's crack. Watch for things like that in the camera so you can fix before you snap the photo. I would have tried taking a step to the left or right and angling it so there weren't so many houses is the background.
4 cute, but the foreground and background is distracting. Also not enough for my contrast for my taste. Same fix for the background and try bumping the contrast.
5 Good focus, but overexposed and squinty face. Try getting a reflector and putting the sun behind and to the side of the client.
6 Same as 5 and the blacks aren't black. Repeat ^^