Wife no longer in love with me

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I know there is blame on both sides, but I feel like I carry most of the responsibility. The most frustrating thing is that we both now know what we needed to do to have a successful marriage, but she won't even give it a shot or try because she 'got scared' and doesn't 'trust' that it won't go bad again in the future. It's not like there has been any cheating from either of us, so everything is so repairable, but she won't even try. She has just decided she no longer has the same feelings for me and that's it - end the marriage and engage lawyers.
I can't get through to her, no one can. Everyone tries to talk to her and tell her she's mad for doing this and walking away from everything we had together. I just get so frustrated I want to scream and shake some sense into her!
I hate this so much!!