Ruling on forfeiting the right to inheritance in a misyaar marriage

A new Muslimah has married a Muslim man without her family’s knowledge

Is it correct for the husband’s father to be a witness to his marriage contract?

Her parents want her to marry her paternal cousin and are rejecting a suitor who is not family

They committed zina then got married, and they cannot remember if they repented before doing the marriage contract or not; do they have to do a new marriage contract?

Should he get married without his father’s approval?

He stipulated that she should look after his father, then he took a second wife and she asked him for separate accommodation and to divide the work with her co-wife

She was a Raafidi, then Allah blessed her with guidance but her family will not let her marry a Sunni man

She does not have a guardian and the man who wants to marry her is in a different city; how should the marriage be done?

She got married without a dowry and without witnesses, and he is refusing to take her to his country