Hopefully this is the correct forum to place this question into. It does not have to do with family, but it is about relationships.
I have two friends (A and S) who are ex-friends with each other. After not talking for almost two years, A decided to send a long text to S expressing how much she hated her, and then sent me a text to "warn" me about what she's done and what she said, just in case S decided to talk to me about it. I know that I need to talk to A about not involving me like this in the future, since I do not want to get into the middle of anything.
What I'm trying to figure out is if I should express to her how bothered I am about what she said to S. I am praying about whether the godly thing is to just set up the boundary about her choice to involve me, or if I should address how disturbed I am by the fact that she would express such hatred to someone without provocation. A is not a Christian, and does not believe she has done anything wrong. Under normal circumstances I would not say anything, but I am losing respect for her because of this incident. Would the adult, godly thing be to tell her how bothered I am, or should I stay out of it because it's none of my business? I generally flee from any sort of conflict, so I'm unsure if my hesitation to express my feelings stems from fear or from wisdom.
Any insights or suggestions would be most appreciated!