What would you do if your MIL...

Nobody has an opinion? Put yourself in the situation. It doesn't even have to be about abortion. It could be about anything.

 I'd say nothing. If she really wanted to get into it with you she'd say it to your face, then if you want to defend your beliefs you can. Otherwise, you said your piece and she said hers. When something controversial, like abortion, is posted you should expect others to agree and disagree with you.  I'd just leave it alone.

The thing is, I haven't said my piece though. I didn't say anything back to her. I just don't want her misunderstanding my reasons why I am pro choice. I want her to understand that if you don't like abortion, really you should be an advocate for low cost birth control! She has always been passive aggressive like this. She would never say something like that to my face.

 I understand feeling very strongly about something but its not worth starting family drama.  She is entitled to her opinion just as you are entitled to yours but because she is family it would be better to keep things civil.  This is a person you have to face on holidays and family reunions.  I personally wouldn't want to create permanent bad air over a difference in opinion.  Let it go.

Tell her you CHOSE to bring those fetuses to a viable outcome.  Thank goodness you have the CHOICE to do what you want with your body.  Other countries force women to abort every day.

but SHE started it.. she's creating drama with me.

Quoting -PB:

 I understand feeling very strongly about something but its not worth starting family drama.  She is entitled to her opinion just as you are entitled to yours but because she is family it would be better to keep things civil.  This is a person you have to face on holidays and family reunions.  I personally wouldn't want to create permanent bad air over a difference in opinion.  Let it go.

You can tell her that yes, you get that your children were once fetuses, and I chose. I chose to have them and love them and nuture them. But what I cannot do is force someone else to think like I do. It's going to be around whether you or I agree about it. I honestly hope no one will have an abortion, but I support the right for her to decide what to do if she feels she needs to have one. As I said, I made my choice, I need to let others make theirs.

I'm also pro-choice... I voted to just blow it off.  She has a different opinion (obviously), and debating it with her may only create a bigger rift.  You and I both take the stance that abortions aren't good, but that women have the right to choose that path for themselves, but many pro-lifers don't have that same opinion (obviously) and trying to convince her that you don't think they are ok but still think they should be available might just blow right over her head.  Let it go, and if she wants to bring it up again, then feel free to debate.

If she insists on a response, then say gently what you believe. Then if she argues, smile and tell her you appreciate her telling you this.