Ha, well at the moment I don't exist in her life, and I think she cannot even feel for herself, nevermind what I might be feeling.

As far as I understand, there is a good chance they are beating themselves up inside about how they are treating you, but do not have the capacity to verbalise any kind of acknowledgement.

To be honest I am struggling to ever recall a time when I got a sorry during the whole relationship. I seem to remember me apologising a fair bit, even when it seemed to me that I wasn't the one that should be apologising.