This is hard. I know how bad it feels. But truth be told, her going away for 2 weeks to a hotel was not going to fix anything. This is a LONG road. Accept that she is gone. Accept that the M you knew is over and move on. Seek out and find peace. Sounds like you have some codependency issues. That's ok. Get a book and read on that. Spend this time finding out who you really are? Find yourself so that you aren't Lost anymore. 6 months isn't actually that long. That's much better than if she had signed a 1 year lease.
Me: 48 y/o W: 47 y/o Together: > 20 yrs BD: Dec '15, then S 2nd BD: Mar '16, then I filed for D April '16: started piecing