Tal and amicon are right. Training is really important to get over her. As hard as it is, it's her life and she makes her own mistakes now and you need to build your life so that you won't think about her no more.
Of course from time to time, I still think what stupid mistakes must be making now ( I don't think her liver is functioning right now with all the alcohol she's taking ), but it's her life and I have nothing to do with it. As far as it concerns me she could die and I wouldn't care.