I know it's a hard phase for you, but at least you realized how much you love her and the value she holds in your life.
To know what is going to happen and to think about it, will kill you a bit every day. So I suggest you instead of grieving for what is going to happen, try to do something in this time, what you will be proud of happened. Do something to make her happy and proud, and you will be at peace that she has gone being proud of her son.
May god give you strength to face what is about to come.