I'm not a mind reader, but I'm guessing from the way you describe things that you didn't have kids and weren't trying and didn't have any discussions/plans on the table to do so...that was a really, really big deal to her...and she got the sense it wasn't a big deal for you. So she is seeing her peers having babies and maybe getting pressure from her mom to produce some grandchildren and is doing the math in her head (and has been for the past few years) about how much time she has left in the fertility department and thinking--OMG, my H doesn't even talk about having kids...what have I gotten myself into...and how do I get myself out?
That's a very, very valid point.
There are moments in this life when you are so confident in the rightness of your actions, that not even for a second do you consider the option that you might be wrong.
