So she's doing it to push your buttons. Okay, then, stop letting it push your buttons.
I understand about the panic thing. My last job had me soooo jumpy about everything. (I quit because my boss would, quite literally, yell at me daily.) A year and half later, and I'm still working at unwinding that reaction. I also have a good friend who suffered from panic attacks for years. It takes time, but you can unlearn that reaction.
Don't worry about what her T may or may not be telling her. Out of your hands.
Again, they all say it's over. That's just the alien talking.