That's actually not anything she ever complained about, even in the best of times. For whatever reason, from the word "get-go" lo these 22 years ago, I never deployed the sarcasm against her -- though certainly against others in social situations, much to her amusement. I'm only ever "mean" when I review book manuscripts and journal articles -- the rest of the time it's deployed in jest.
But this, of course, is the problem with text-based interfaces, viz e-mail, etc.
And as I think on it, this is a point that perhaps bears some further discussion. One encounters an awful lot of tea-leaf reading in posts around here, with lots of inferences drawn about "what" s/he is thinking about, or what the mind-frame of this or that poster is, and there's a risk -- as evidenced here -- of over-drawing inferences based on a limited amount of text and an absolutely one-sided recounting of events.
Speaking only for myself, I must remember to caution myself not to go beyond what people post and import a host of assumptions.