You should probably assume it isn't about you and ignore it. Or hide her if her posts frequently bother you.

A few weeks ago, I watched "Weight of the Nation" and posted what I thought was a pretty innocuous comment about the show and how it's a scary look at the things we Americans do (diet/sedentary lifestyle) that are killing us. A (normal-weight) friend preceded to ream me out over FB, posting a multi-post rant in the comments because she - a lifetime smoker - had developed lung cancer and thought I was being judgmental of people who make bad decisions. (Disclaimer: yes, I do judge the man with the BMI of *72* who died of a heart attack. 72? That is 3x the norm.) I ended up deleting the entire thread because I was uncomfortable with the fact that 600+ people (most of whom did now know this girl) could read it and be privy to some seriously TMI stuff she wrote.

I messaged her offline about it and she has yet to hide or defriend me, so I chalked it up to her being drunk that night and having some unresolved issues with her diagnosis and reading something into my comments that was not intended.

My point: chances are, her post has nothing to do with you. And if it does, do you care?

NP here and I didn't read through.

You need to let it go and hide her feed if it's getting to you. I've done that with a number of people who are always posting defensive/attacking articles. Out of sight, out of mind. If she wanted to have an actual conversation with you about it, she would bring it up in person. It's her FB, don't become the person who's trying to censor what other people put up there. Put what you like on your own and hide them when they're offensive. I have DH's entire family hidden, blocked from seeing my own posts, and some defriended after making child rape jokes following Sandusky's arrest. I also have most neighbors filtered for this very reason: I want to maintain the civil acquaintanceships I have with them without knowing more about their opinions than I really need to.

Facebook is a good opportunity to remember that the world does not revolve around you. People should not be expected to filter what they think or say because of your opinions and choices. Your right is to not read it, and you should exercise that right whenever you get caught up.

OP, I found your "friend's" post upsetting because it seems to take some kind of glee in parents who loose children. That's not cool. I do find it interesting that you find the problem in how you chose to have a baby, not in the overall sentiment. Maybe you aren't as comfortable with your choice as you'd like people to think?

If she did not mention you directly in the post, unfriend/ unsubscribe and forget about it - and stay away from these subjects on the occasions when you do have to interact socially.
If she did mention you directly, I would speak to her about it, off FB of course. And then definitely unfriend!