What did you lose, really? Someone you couldn’t trust, who was entitled and would never have changed. She thought she was “all that” (and I know you’re grieving the relationship and it doesn’t feel like it right now, but she’s not as great as she purports to be). You’re grieving the person you thought she was/wanted her to be, not who she actually is. It will take time and no contact for your perspective to really change, and you have to let yourself feel the bad feelings - they will lessen a little each day.