How do you know you didn't tell her? Not all communication is verbal. That's why we have double-blind testing (sorry, I was a statistician in my past*). But I'm not disputing your findings, though.
It's a very long time since I've listened to any vinyl. My CDs rarely get an outing these days either. Most of my listening is of MP3 files and youtube videos on my computer, through a cheap pair of headphones.
I really enjoy those occasions when I do listen to CDs through my hi-fi. It's good to get a bit of air moving. But due to just single brick walls between my neighbours on either side and I, those occasions are ( in the interests of fostering cordial relations) kept to a minimum.
I still have not met Jumbly Grindrod though.