Is this the right thread for this? I wonder...

Anyways, my fiance continually blames everything that is going wrong on herself. This is greatly effecting the relationship, even so far as punishing herself by sleeping in the livingroom on the floor. She has had next to nothing to do with the things going wrong. Can anyone think of any situation that has precedence to this that is similar, and how it was solved?

I don't know what to do...