marrage is necessary in life????

Marriage isn't necessary for everyone in order to have a happy and great fulfilling life. It would be worse to be married to make someone else happy including your parents, then finding that it isn't what you want. Life is too short to live it for other people, and you don't have any guarantees either. You should tell your friend that if her parents love her and really do want what is best for her, then they should know what is best for her is for her to make her own decisions, right one and wrong ones. It is her life and her decision. They just want her to be happy, and they are convinced being married will make her life happy. It will have to be an understanding between her and her parents that if she decides to get married, it will be when she is ready. They are only supposed to guide her and help her become an adult, and be there for her. They are supposed to let her be an adult once she has become one, after that they are only supposed to be there for her through the good and bad.