Nodding slightly in confirmation that she'd heard him, Stacey tried to finish quickly without rushing the process. There was a bit of tension in Charlie's tone, and she didn't want to cause him any stress. Once she was sure that the last block of color was settling the way it was supposed to, she turned off the ink gun and said, "Okay. Feel free to move around a little, but try not to let the ink touch anything, if you can."
Pulling off her gloves, Stacey finally looked up, noticing the physical reaction that was probably making Charlie uncomfortable. She patted his ankle reassuringly before standing, and said, "Don't worry, it happens all the time. Hell, it's happened to me in the middle of a session and I'm asexual, so... yeah. Weird, being on that side of things, but nothing to be concerned about, just a body's way of reacting to the pain."
She did make a point to turn her back to him slightly for a sense of privacy, moving to fiddle with the stereo in the corner of the booth.