Personally, I felt she lost it crying more because that choice was taken away from her than because she actually wanted kids.

YES I came here to say exactly this. You are awesome.

It was really interesting to see a character who didn't really want kids have that happen to them. If it had happened to Lily it would just be another cliched oh-woman-wants-babies-but-she-can't-have-them. I know Robin was upset but I don't think it's because she wanted kids; if she really wanted them she wouldn't let being unable to have them biologically stop her.