Hey there. I'm the English proofreader for the game. That phrase gave me a small pause when I first read it, but it did make sense to me. It could have been phrased better, perhaps, but I felt that the line fit Jade's character well. Keep in mind that Jade was under pressure to come up with a response, very quickly. Also, while she is a very smart person, she didn't get to finish her primary education, so on a few occasions, I've left some imperfections in her dialogue to reflect that. It wouldn't feel natural if Jade spoke like an English professor, when she was pulled out of school at 16.
I ran the line by one of my old English professors this morning, and she quite liked it. She offered a couple of possible alternatives, including one of yours, but she agreed that the current line works, based on Jade's character. I intend to go over the full script again, once the game is completed, to clean things up. Since I work off of a script file, without being able to see the renders, several mistakes get through, due to lack of visual context clues. The game is still in development, but I intend to give the dialogue a very fine polish when it's ready for release.