Permission of the Bride-to-be/Father in Islam

The girl’s consent is necessary and has to be taken by her representative, directly.
In case of a virgin/spinster the father’s or the grandfather’s permission is also necessary. However if the permission is unreasonably withheld under some conditions or the girl has no father/paternal grandfather it is not necessary.
However, a woman who is not a virgin, does not require any permission in case of remarriage.