She’s tired of catering to your feelings. 

You see, when you appear to be female, and sound female, and are objectively female, and you visit a restaurant with a group of women, and the stranger taking your order fails to pre-emptively ask, as one does, whether anyone present has serious mental health issues, and instead simply says, “Hi, ladies”… Well, clearly, this is an outrage. 

Update, via the comments: 

Nikw211 adds,

I am not responsible for the state of someone else’s mental health. This is not because I lack compassion, but because anyone who makes the state of their confidence and sanity dependent on random strangers is going to be forever disappointed. It would be like bursting into tears every time you buy a lottery ticket and find your numbers didn’t come up.

It does seem an unpromising path to contentment. As noted here recently, 

This, I think, is what makes trans activism different from that of other groups with which transgender people are often equated. Someone being gay, for instance, doesn’t generally entail a demand that everyone else either hallucinate or pretend to hallucinate. Which is to say, trans activism often includes a belief that the rest of us should pretend that the physical reality we can see is somehow not the case. And unsurprisingly, people may object to being told that they should lie on demand.

A concession that would leave those so inclined at the mercy of any poseur, or prankster, or unpleasable neurotic.

Some will likewise not welcome being told to indulge, wholesale, a bundle of phenomena that includes not only actual gender dysphoria, whether the result of neurological anomalies or childhood molestation, but also autogynephilia, serious personality disorders, and assorted exhibitionist and unsavoury compulsions. The expectation seems to be that we should take these different phenomena, with very different moral connotations, as being one and the same thing, and then defer to them. Which is asking rather more than can readily be agreed to. 

Update 2: