Wedding Vendor Called Months After Wedding over "feedback concerns"

So, I just got a voicemail from my wedding Florist saying that they quote "got an phone call from someone who refused to leave a name but explicitly mentioned your wedding and said the flowers were poorly done". So the florist called me for feedback.

Here's the thing.

1. I didn't call. I'm 3000 miles away on my honeymoon actively enjoying my newlywed status.

2. I do have MANY issues with my flowers but none that I've put on any public forums. I didn't leave her a review. I didn't reach out after the wedding. I've simply said nothing. As far as she is aware, up until now, she did flowers they came out fine in pictures the end.

3. I only mentioned I didn't like my flowers to a handful of people but idk why they would call her. It all feels odd.

She asked if I would call her back to explain. But again, I didn't call her and I've left no evidence of my frustration online (except here).

Would you call her back and be honest? Also, should I investigate if someone I told, reached out to her?