Her 'breathing' had quickened during all that, and didn't slow even after First Aid unplugged. She has to think on the question as she let's her arm drop back down to her side.

She knows what those two words mean, although sexually she only knows in the most dictionary like way, but no idea what they mean together.

"I... do not know what that means?" In other words, First Aid, she's about as sexually active as a table.