Hairy, Ah bummer. It sounded like it was better than what you had anticipated, and therefore good.
So why are you talking to yourself only about the OS? I realize you didn't want to engage with her over it, but it might have helped to actually say to her what you only said to her in your mind. It sounds like you've got a real fear of telling her what is on your mind (not that I blame you). What harm would have voicing your opinion done? It wasn't an indictment of her, unless she chose to take it that way. Harry, she can't read your mind, and every time you hold things like this in you are adding one more stick to the fire that is your resentment.
I almost get the impression that what she is really trying to do is get a reaction out of you more than anything else. HD, I'm guessing you need to stand up more for yourself.