A different world, they were saying. Literally anything. It wasn't precisely less fantastical or strange than aliens or superpowers, but it did, at the very least point to something she could do. Some other place she could go. She would have picked up on the potential danger just by the fact of Peter's hesitancy -- if a man with supernatural abilities of any kind was nervous to use these doors, that was worth noting.
Still, she bristled automatically at the idea that she needed looking after, even if it was practical. It touched an old wound in her, a still-raw nerve. "I don't need--" she began, but then immediately cut herself off. Protection, she'd almost said, her hand hovering near where her phone might be, were she wearing anything decent. Except she did need protection, and she knew it, and even if she had her precious camera phone here with her, the blackmail material on it would do her precisely no good.
Her hands trembled lightly, and she dropped her head. "Forgive me," she murmured, and if anyone here had known her at all, those words alone would have been an excellent indication of just how rattled she really was by all of this. Irene never apologized, especially not for something so trivial as snapping at someone. But now... "I'm just. Not used to needing anything. From anyone." She gave a little shake of her head in the Doctor's direction. "I suspect I won't be hungry for a while," she said, her voice a little softer now. "But I'll look up your friend. Thank you."
She looked back up at Peter, then: "But how do you... get back?" she asked. "Does the door disappear as soon as you're through? Can you... just duck back out?" She pressed her lips together, thinking. "Has anything on the other side of a door come over here?" Is that, somehow, she wondered, How we got here?