Mystique notices the young woman almost immediately, a long lifetime spent observing people leading her to take in peculiarities of body language and posture, noticing the scar and the curious way the woman held one hand as if ashamed of it somehow. The body language and sigh all add up to one conclusion, even as she draws up to the stranger.

"You don't sound very happy." She remarks, keen shark-like evaluation hidden behind a warm sympathetic smile. The tattoo and the scar, clear signs of an outcast, another mutant perhaps?