IMO - you're allowed to share with close friends about your life choices..... as long as you aren't throwing barbs, gossiping, degrading her character & just speaking to the facts as they were in your reality & how it impacted your life.
If she has a problem with that it's her problem, not yours. It doesn't matter why she takes issue with it, it's hers to figure out - I'd stay in my own lane & try not to wander too far down the path of wondering what her thoughts or motives are.
I would, however, ask my friend to be more considerate about not sharing my personal conversations like that. My issue would be with the middle man here - not her.