Girls family not pleased with proposal

Q: I am in a love with a girl for the last 7 years. I asked my mother to go there and ask for rishta. We all went to her home and gave our proposal. They said they shall let us know a week later. After a week they invited us to their home and said we are fine and said Yes for marriage. Before going there me and my mother perform Istikhara and it was good but after saying yes they perform istikhara but saw negative signs. I asked a Mufti and he said you cannot perform istikhara after saying Yes. Please tell me what should I do?

Court issuing a divorce without the consent of the husband

Q: My wife was divorced from her ex Husband. When she filed the divorce in America, her ex husband left for Pakistan and he never showed up in the court or Islamically gave her divorce or signed any paper. But the court in America awarded her the divorce and then she got married to me. In Islam did her previous divorce happen. Because after 2 years from the court order she got married to me. So I need to know if our nikah was valid?

Premarital relationship

Q: Im in a relationship with someone and we want to marry each other as soon as possible but because of the halat we are not able to marry each other. My parents are against our relationship and his parents are fine with the relationship. I dont know what to do? I want him. I dont know how to make this relationship in to husband and wife? What should I do so that my parents can accept him and our relationship? What dua or wazifa should I do to get him?