I'm sorry but you might be autistic.
She was probably just trying to be nice and friendly.
They're not "tracking you" she just remembered you. Jesus fuck.
She wasn't telling you how to live your life. She asked why you do something.
Humans are allowing to talk anon, is it unprofessional to be nice? She didn't give you a third degree, you're the one who is doing that.
Maybe try eating out less if social interaction bothers you that much.