Telling her you won't give up, and asking her to work on the marriage, at this point is pursuit. The more you express wanting to "hang on," the more she will want to leave the marriage.
If you were to leave do you have an alternative place to live? If she moves out can you afford to stay where you are now? Try to avoid talking to her about any of this until you have thought everything over carefully.
There is no arriving, ever. It is all a continual becoming.
