"I..." Charlotte opened her mouth, but she couldn't make anything come out. There were a thousand reasons... or were there any at all? It was so hard to tell. If she met him, actually met him, a number of things could happen. They could keep holding Snow and Bigby back, or they could stop with this charade and... well, Charlotte didn't want to think about that. Or nothing could happen at all. Or worse, she could tell him about Peter — she'd have to eventually, that was certain — and he could never speak to her again. Even if she couldn't bring herself to speak to him now, the last thing she wanted was for Jeremiah to think badly of her. She couldn't stand to be a disappointment, never could. And somehow, disappointing him terrified her more than anything else, and much more than she could say. She wanted to avoid it if she could — hence the procrastinating. Something like that, anyway. She couldn't say. Couldn't put it into words.
So finally, still looking down, she said, simply and quietly, "I'm just not ready for that yet." It was oversimplified, but it was the truth. She was just scared. At least she was finally admitting it.