1-3) Only the Father’s permission is needed in the case of a girl unless the father’s refusal is not based on Islamic reasoning.
4) If a girl goes and marries her self without the father’s consent in that event the marriage is not valid unless:
– She is totally independent of her dad.
– She spends on herself
-And the father’s refusal is not based on Islamic reasoning
5&6) Yes he can but that does not make the conception and the baby legitimate after you marry her