I agree with the previous poster. Here are some of my thoughts as well:
Overall, I think the dreamy gaussian blur thing is a little overkill in these. But, part of that is just my taste.
They also all look a tad red to me. Especially in the first.
1.) The angle is a little much and you chopped off her fingers at the bottom.
2.) Lovely moment! There's little too much negative space on the right. I think you could've included a bit more of Mom. But, I like that you didn't crop out the little girl's arm in this one. You might want to try brightening it some. It looks a little too dark.
3.) I think that angle works better here than in the first. But, I would have had her place her hands gently over his. They look a little distracting where they are. Be careful where you are cropping. It's a little to close to the edge imo. Also, try having him bring his face forward more or step a little more to the right to capture more of it so it isn't so hidden behind hers.
4.) Same thing as the last. Have her hands over his. I love the hands making a heart over preggo bellies shot though. So cute
And, when I do maternity sessions I clone out stretch marks. You could always ask her what she wants though if you are unsure.
Good job overall for your first indoor session!