I agree with >>7 that you can't just desperately cling to her, otherwise you will end up disgusting her, and that won't help you. Try to respect what she is telling, and not flatly ignoring it, forcing her to become more harsh.

I think your best option would be to ask for a pause in your relationship, something like one week or one month, and see where you stand after that. During that time avoid all contact (otherwise you will scare her again).

The other only option I see is a clean break up. There is obviously something deep causing the break, and you can't just patch that with a rose, unfortunately...