She wants to be your friend so be her friend. Don't talk about feelings, emotions, winning her back and especially the PAST! Treat her as you would a best friend. Make jokes, be funny, relax. Show her that you are willing to work with her on this and you're not planning to shove her into a corner with all of the decisions that she has no capacity to make at the moment.
Give her time and space. May take a lot longer than you think and she may not come back to you. You'll just have treat the situation as a positive no matter which way the wind blows. Try to be there for her if she needs you and if she decides to move on completely (I.e. seeing other people) then start seeing other people as well...
Don't cry, don't regret and don't blame
Weak find the whip, willing find freedom
Towards the sun, carry your name
In warm hands you are given
Ask the wind for the way
Uncertainty's gone, your path will unravel
Accept all as it is and do not blame
God or the Devil
~Born to Live - Mavrik~