Cisco and Caitlin's shock shows in their expression. Barry had said that she's a speedster, but they don't expect such a show of speed. They expect some sort of breeze. They don't expect the way that Dani freeze frames toward them. They're duly impressed. "Whoa," Cisco lets out a little gasp. Caitlin is just stopping herself from launching into a request for tests. She wants to see this girl on the monitors, on the treadmill. She wants to observe her brainwaves and her heart beat.

Barry chuckles, ducking his head a little. He presses his lips together and looks to Cisco and Caitlin. "I'm going to go change. You two can keep Dani company?"

And he's actually not going to use his speed to do it. He wants to give Caitlin and Cisco a chance to be alone with Dani for just a few moments. It'll also give Cisco a chance to show Dani all the tech.

When Barry returns, he's no longer wearing the costume. He's got on jeans and a tee shirt with a zip up hoody over it. He approaches Dani with a sheepish sort of smile. "When not in costume, I go by Barry," he introduces himself to her again.