She is having to process all of this, and it's hard on her, E..
I think that it would be good if you talk to her face to face. Tell her that you are afraid that you offended her with your willingness to discuss so much of what you do with your child, and that you love her and wouldn't have hurt her feelings on purpose for anything.
Some people ask for your opinion, but then cannot handle your answer. If you aren't close to them, I think that it's best to just back off and not offer your advice anymore. However, you ARE close to her, and I think you need to go to her and talk about it. Offer apologies and tell her that you are just so used to dealing with all this in regards to your child, that you didn't realize that you should have been more careful in talking about it with her.
Good luck,
Dawn