He said she was Tianshan’s child grandmother, how should I answer him humorously?

I was shopping with my best friend today and passed by the park. My best friend heard the music and stopped and looked into the park.

Me: "Why don't you leave?"

My second-rate best friend said: "I feel so scared when I think that we will grow old!"

I comforted her, what are she afraid of? People will grow old and die!

Her: "No, those square dances look so difficult! We can learn them later!"

Okay, okay, you win.