Referring the question, to Dr. `Abd al-Fattah Idris, professor of Islamic jurisprudence in Al-Azhar University, he said,

Wilayah (guardianship) in marriage is a right by which the wali (guardian) shares with the woman under his guardianship the responsibility of choosing the suitable life partner for her. However, in all circumstances he does not have the right to force her to marry a person she does not agree to. He also does not have the right of preventing her from marrying the one she wants to spend her life with just because he does not like him. In case he obstinately refuses a suitable person whom she thinks to be good for her, the right of wilayah goes to the next one in order; in this case one of full brothers. This is because the father has no legitimate reason to prevent his daughter marriage as long as her cousin is a suitable person for her.

So, one of the woman grown brothers should share this responsibility. For a grown Muslim woman, the lawgiver has given her the right to choose husband. During the time of the Prophet (peace and blessings be upon him) a woman came to him and told him that her father wanted to marry her to his nephew and she was displeased with that. The Prophet (peace and blessings be upon him) suspended her marriage and gave her the right to decide. She said: O Messenger of Allah, I approve what my father has done, but I just intended to inform women that men have nothing in this affair of theirs.

This is clear evidence that it is the woman that has the first opinion with regard to her marriage, not her father or any other relative, as long as the person she chooses is suitable and religious. The Prophet (peace and blessings be upon him) said, “When a man with whose manners and religiosity you are pleased comes to you [seeking marriage] accept his marriage proposal; if you do not do so, there will be mischief in land and a broad corruption.”