Behind-Your-Back Talk

What do you do when a friend tells you that another friend has been talking ish about you?
I swear, female friendships are constantly evolving. They also never change. The "she was talking about you" routine has been going on since I was in grade school. But back then, I feel like spilling the beans on behind-your-back talk was done out of boredom and messiness. When this happens when you are in your 30s, you can't help but feel like there is some malicious intent. I think that Friend A told me about the behind-the-back talk to warn me about Friend B, who she is no longer friends with. But it low-key hurt my feelings.
I know, I know. All the things I have said about friends in the past, I have a lot of nerve being butt hurt. But shocker, I is.
"For me, the story isn't that Friend B was talking about you," my friend Tay said during our volunteer meeting. "It's that she felt comfortable talking about you to Friend A, which makes me wonder what Friend A says about you too."
Mic drop. Good point. Good point that I'd rather not think about. I really, really like Friend A. She has shown up for me in some very important ways over the years.
Unfortunately, this spilled tea has left some small, sticky stains on my friendships. But what can you do at 34 but wipe up the tea and keep going?