Are you aware that FLDS do not trade their precious daughters?
There are no FLDS men that I know who would let his daughter go to just any man.
The Prophet is the matchmaker. He is the last one who has the decision that she is ready. He does choose who marries who. The young ladies are expected to be responsible, kind, and prayerful before they are deemed worthy to marry. The parents of the potential bride are the first to give their blessing to her by bringing her to visit the prophet or his counselors on her behalf.
She had to be willing and able to marry someone she is matched with. She is aware of her decision and is most likely anxious to be placed by a man who is chosen by the preacher/leader.
The man that the girl(usually 18-22) will be chosen for is quite young himself(usually 20-30). There few are exceptions.
