Coffee drinking confirmed

I asked my coworker Romona yesterday if she drank coffee.  I suspected he was not a coffee drinker.  I never see her drinking coffee at work.  She occasionally goes down to the vending machines with Sarah, another one of my coworkers, to get a soft drink.  She eats a lot of fruits & veggies, sometimes a bowl of oatmeal in the morning, that kind of healthy stuff.  And I know she’s a gardener.  Not that any of those things is an indicator that she’s a more health-conscious person than I am, or that she has sworn off coffee.  Mostly it was just that I never saw her drinking coffee.  This is in an office where everyone drinks some kind of caffeinated beverage.  It seemed off that she didn’t.  So I boldly asked her, as I was walking to my desk with a steaming-hot cuppa, “Romona, do you drink coffee at all?  Because I never see you drinking coffee.”  And I didn’t say it, but it was implied: “How do you get out of bed every day and drag yourself to the office if you don’t drink coffee?  How is that even possible?”  And as it turns out, she’s not some magic fairy who gets her energy from the scent of flowers and the warmth of the sun.  She brews a pot of coffee first thing in the morning and downs one or two cups “just to get my heart going,” like the rest of us normies.  OR SO SHE SAYS.  Is there a way to confirm coffee consumption?  I have some intense googling to do on this subject.