Am I overthinking this interaction?

I was working the front desk and we have an exercise class that happens twice a week. Two ladies came in for the class and I had them sign their names. As the last one finished she put her pen down and looked at me and as she was walking away she was like “You’re welcome, she’s pretty”. And the friend agreed. I’m confused though because my other coworker was at her desk nearby looking down and they passed her desk. I’m a skeptical and it felt like they were talking about me because I said thank you and laughed but I’m not sure lol. I do get that I’m pretty a lot.
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+1 y
I’m not trying to sound conceited or anything, I just genuinely wanna know if they were talking about me. My friend didn’t acknowledge the compliment so maybe?
Am I overthinking this interaction?
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