I wasn't sure you would go back to the s/o confessions thread, so...

It could've been really easy to cause a family rift after some of the things that happened with your mom, your sister (sil?) and you regarding the joy of pregnancies and grand kids, iykwIm. You didn't rise to the occasion, you did not allow the hurtful nature of it to make you do something regrettable for yourself and your family. Obviously, family means a great deal to you. You love your mom, regardless of her faults and you were joyful for your sister (sil?), even if your mom's reaction made it a little painful. You are a good mom.

There's lots good about yourself, now go edit your post!