April could argue that there was more to what Eliot didn't say than to what he did say, that listening to the silences and the grunts was more important than listening to his words, but she said nothing because she didn't expect the Director to understand, or care about such things. She'd make sure that Eliot was safe, that was what was most important to her.
She watched him put the music on and listened hard as he whispered out his question. It was a rather simple one to answer for her though. "No, they wouldn't," she said confidently. "Our blood looks the same as everyone else's."
"Even with a DNA scan, which an ER wouldn't do, there isn't anything that stands out at first glance. Though we do seem to share a genetic marker, but again, that's nothing that the ER would pick up on."