/edit for reading comprehension fail
[ She moves, and his hands stretch out to touch the glass as well. There is not need for a double-take; he is far more familiar with her now to bother mistaking her for Ribbons, but there's something different, too. ] H-Hiling! [ That's no water in there, is there? Even so he's been in a couple of labs and seen specimens and creatures in them. She's not an animal, though, and the sight angers him. What if she can't breathe in there? ] Hold on! I'll get you out!
[ Perhaps fruitlessly, he begins to pound on the glass, all the while looking around to see if he can spot some kind of obvious switch or console. He's not the most technically-minded, even now, but he should be able to manage a simple "open" command... ]