Unfortunately not. She can read minds from a distance now, but it requires 4+ successes on a Mind Scan power roll, then the mind reading power is an 'extended action' meaning she can't do anything else, and that requires successive rounds of opposed willpower rolls. So basically she'd stop in the street to *Puts hand to head* nyoing-nyoing-nyoing.
As far as I can read, Telepathy discipline doesn't give off any visual cues that it's being used (unless power entries denote as such), though those it is being used against are sometimes are aware of it. If she gets the Dominate off on one of the spies, she has to split her and their actions; so they'd each take a half action move each round as we head down an alley or something, basically looking like they're moving at very leisurely paces.