Looking around at his exclamation, she was relieved to see no one else was around. This was bad, very bad. People didn't just appear on the ship without authorization. And they came onboard in the transporter room!

"Yeah, this is the Enterprise. Look, I'm glad to see you, believe me, but you're not supposed to be here, and as far as I know, no one else here knows about the Plane. They'd probably see accessing it as a breach in security, and because I can't help or predict what happens, I could be grounded. So you really can't be here."