Is divorce issued by a civil court valid?

A young man proposed to a girl, but when the marriage contract was done, the girl’s father had a disagreement with his daughter’s fiancé, and refused to do the marriage contract. But the girl, her mother and her brother wanted the marriage to go ahead, so they left their house and rented an apartment, and they left the father who refused to do the marriage contract, and the marriage contract was done; the maternal uncle of the girl was the one who acted as her guardian (wali) in this marriage contract, in the presence of her brother. They argued that the father does not pray and they did not want him to be the wali of his daughter. How valid is this marriage contract?

What are the Virtues of the Day of Arafaah?

I read your answer about prayer whilst doing surgery or afterwards. I work as a doctor and the day is very short in Canada during the winter; Maghrib comes at 5 p.m. Hence the time between the prayers is very short and I do not know how the surgeon can do his work when this time is very short. Hence I think it is better to make the prayers up afterwards. What is your opinion on that?

What is sincerity, and what are the benefits of sincerity?

I would like to know the proper way to make du’aa’ during prayer, as the Prophet (peace and blessings of Allaah be upon him) did it. Is it after the prayer or between the two prostrations or whilst standing or when?.

Can you confirm if Aeisha (radhiallahu 'anha) said this about the Prophet: "His character is the Qur'aan". I have spent hours searching for the daleel but to no avail. Your help will be much appreciated.

A woman became Muslim and lives with her family who are not Muslims, and now they do not object to her being Muslim. She tried to call them to Islam by various means, but to no avail. How should she deal with them in their misguided state? Should she uphold ties with them or limit her relationship with them?.

Is it permissible for me to say to non-Muslims "And the same to you" when they wish me a Happy New Year or say Best Wishes?

In my school it is Christmas time. My school has this Christmas tradition. Every year a classroom gets an adopted family that is poor so they can buy gifts, food, and donate money to them for Christmas. Unfortunately, I have refused to donate any money or give any food for the following reason: These denotations will be done in the name of Christmas, so that when the adopted family receives these donations, they will say "God Bless The Christians". 
Am I right for refusing to give donations?

Question:

I have a few questions concerning parents
1-What right does my Mother have over me?
2-What right do I have over my mother?