Your heart is broken and you are grieving. I’m sorry that things didn’t work out as you hoped and planned. It’s painful to lose a person as well as the future you thought you had. You are going through the usual stages of grief — from denial to bargaining and probably some anger too. At some point you will reach acceptance, but it will take time.
The fact is that you have already “lost” her. It’s wise — for both your sakes — that you are not contacting her. It is not wise to think about putting your own life on hold for 2 years in the hopes that she will change her mind.
It’s only been 2 weeks since the break up. By the time this letter is published, it may well be a month. I encourage you to grieve this relationship and to learn what you can from the experience. Then make yourself available to someone who is also available. You wrote a moving, intelligent and insightful letter. Someone is going to be very happy to meet you and to become your lifelong partner.
I wish you well.