It's always like this, every time she changes. Something altered in the brain chemistry, instincts, pheromones, who knows...she loses all control and subtlety. Doesn't matter what you're in the middle of doing, you're gonna end up staring down the barrel of this.
And you're always of two minds...on the one hand...again?? Can't you get a moment's peace? Does she really have nothing else on her mind?
On the other...you feel her tail beating back and forth a mile a minute on your chest...that look on her face, while she's panting so heavily...