strike a match [flameguard remix]

Lynn walked the streets of Aerissia, a miserable cloud following in her wake.

Over and again, she played back that morning's embarrassing scene in her mind, cringing and berating herself in equal measure. It had been a stupid risk to take, she knew that—but a small part of her wondered if she wanted to be found out. 

How many years had she diligently hidden this secret, only to reveal herself to the Crown Prince—of all people—in just a matter of weeks?

I doubt he even knows what it means, though. Even in the Order, there aren't many who would understand what I've done.