Unfiltered Story #219085

I work as a hostess in a popular chain restaurant and it is my job to greet the guests and seat them my common greeting being “Hey guys welcome to restaurant, how many in your party today?” I use guys as a general term and no one has ever said anything before
So when a family comes in, a mom her son and husband i greet them
Me: Hi guys welcome to restaurant, give me one second and I can take you to your seat
Woman at my counter staring at me: IM A LADY
Me after awkwardly trying to respond : umm right this way
I still dont understand why she was so defensive