You seem to be very focused on the outcome (the breakup) and not very focused on the cause (the reason why she is hurting and needs time).
My opinion: focus on understanding and accepting why she is feeling what she is feeling. By understanding and accepting her feelings, as well as your own, you are in a better position to manifest positive things for yourself AND for her. Give her space to make her own decision, because constantly prodding her to give the result you want (getting back together) makes you seem desperate and self-serving.
People who manifest positive outcomes align themselves with the will of the universe, not your own will which disregards the will of others.
Hope this helps...