The only person that you can control is yourself. You didn't break her, nor can you fix her. She's going to do whatever it takes to ease the internal pain that she is experiencing. You will need to dig deep for patience and understand that this is not a sprint, but a marathon. It will take many months, even years before she comes to realize what she's done or lost. Some don't ever wake up and others...well...let's say that the LBS may have moved on w/his/her life and no longer wants the MLCer back.
I would go to your brother's place as planned and live your life the fullest. There's nothing you can do to change her mind and the more you attempt to do so, the more she's going to pull away and say that you are trying to either control her or manipulate her into doing what you want. Sometimes, doing nothing is actually doing something. Learn to sit quietly and the answers will come. Stock up on shovels for digging for patience and continue to post. Others will be along shortly to offer advice/assistance.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
