First, I am sorry for the hurt you have experienced.
Yet, secondly, this is a normal process of growth in life. When we hurt it is a time for reflection. We can always reflect on what we learned from that providential time that God used in our life.
Third, reading over James chapter one about the trials can be an encouragement as well.
Fourth, some time spent with some friends can be a great aid to God's grace working in your life. Sometimes just being around others who love and care about you can do great things to fill your heart and mind with new hope.
Fifth, read the book of Philippians too, as it can be really inspiring, as well spend some time praying as you worship the Lord. Sometimes a time observing nature or God's wonderful creation while reading his word can restore a sense of hope and refresh your spirit.
Sixth, be honest and evaluate what went wrong? Is there anything in your life that God is highlighting that he would like to grow or mature you in with your own character? Was God using this preliminary round to show you something that he is going to mature you in before he does indeed place you with the family he has sovereignly ordained?
Seventh, when you feel too stressed and overwhelmed with emotions and prayer is not enough go exercise and allow the natural physical design of the body to help you relax and find peace again.
"Lord, my sister here is hurting and I ask that you touch her spirit and encourage here. Help her to relax, to see what you are doing in her life, and protect her. Lord give her a refreshed spirit and motivate her to stay focused on you and your sovereign rule over every element of your universe. Use this time to grow her, and as she grows may she find your Spirit to be comforting to her in the days to come. Place some friends close by her to help her enjoy life and your goodness. In the name of Jesus I pray this, Amen."