This was probably because she thinks to thrive in any workplace environment (especially offices) it's a requirement to always accept the offer of a tea/coffee and that you're expected to make it for other people.
I do drink coffee but not at my work, I think I've only ever accepted the offer once since I've been in my current job only because I was literally falling asleep at my computer. I don't drink it at work firstly because I don't want to become dependent on having like 7 cups a day, and secondly because if I did have it then other people would expect me to make them one as well.
I don't even know how to make coffee, I only ever order it in shops or from pressing a button on a machine. My team leader asked me the other week what my tea-making skills are like and he just didn't understand when I told him I've never made a tea in my life because I don't like tea and I don't drink it. Again, because I don't drink coffee in the workplace so I've never been asked to make someone a tea while I was there.