There was a case all over the news about 15 – 20 years ago of a couple in a bitter divorce where the father declared he married off his little daughter in this manner, and refused to disclose to whom. It was an ongoing situation for a number of years. I don’t know or remember what the resolution to that case was, but everyone was all up in arms (obviously
This is where Rav Shlomo Auerbach came in, He had said someone who marries off he daughter like that is a Rasha and not to be belived and it was void