Jocelyn blinked at him, surprised. It's not that she doubted his skill. Really, anyone decent in charms could theoretic do it. It was risky, but it could be done. She couldn't do it on herself, of course. Part of her screamed yes, to just let him, at least try. The only thing she had to lose was her memories, and if he screwed up, it wasn't like it wasn't her choice. But then what if she did lose all her memories by accident? Of her parents, of Emily, of her friends... What if she couldn't even remember who she was? Or who Octavius was?
What if he did it successfully and buried it, rather than erased, and she still had after effects she couldn't explain to herself? Or someone came looking for her, found her, and she had no idea why? What if she regretted it? What if, if she could remember things, she'd have regretted the decision that is?
It was all too much. Even if she Obiviated her memory, his was still intact. He'd still remember every moment, every detail he saw of her. She hated that. She hated that someone wouldn't Obiviate his memory instead. Why should she be punished? Why was she the one being punished in any of this? None of this was her fault!
"No. Not that I don't trust you," she whispered, "It's just no. My memory is my own. The moment. What happened. It's mine. I hate it, but it's mine. It's why I'm Chloe. And if you Obiviate mine, you won't be able to Obiviate his. He'll still remember me; he'll remember that night. He'll still remember me," she said, then broke into sobs again at the thought. The thought of him knowing what she looked like beneath her clothes, of how he'd made her sob and cry, how he broke her and violated her.