Nikaah & Marriage Issues

Appointing a wakeel on behalf of the girl

Q:

1. Person A tells person B, “I will appoint a wakeel on behalf of you who will marry you to me”. Person A agrees. Later the wakeel marries person A with person B in presence of two witnesses. Is the marriage valid?

2. Amatullah comes to know that Zaid married her with Abdullah in presence of two witnesses. But she did not appoint Zaid as her wakeel. Hearing this, Amatullah did not say a word but accepted the marriage in her heart and started treating Abdullah as her husband. Is the marriage valid between them?

Girl choosing to get married or study online

Q: A proposal has come for me but my parents are not calling them so that they can come to our home. They are waiting for their call. Meanwhile, they are signing me up for an online university. As I’m unmarried, I have alot of thoughts about marriage and I cannot stop thinking about it to the point that any mention of marriage makes me feel sad that I’m not part of this union with someone.

What should I pray to Allah (Subhanahu wa Ta’ala) for? For the best solution, whether it is marriage or studying online, or should I beg Him for a good spouse?

Postponing marriage due to health issues

Q: Islam tells us to marry when a boy or girl becomes mature, age 12-13. But according to science, if a girl marries at 12-13 and becomes pregnant then she has to face problems like losing the new born baby, decrease in her growth of height, sugar problems, high BP, etc .

So in these cases, can we delay the marriage till the girl or boy is 19 years?

In previous days, in the 18th century and before that, did it also happen that they used to marry young and these problems had taken place (decrease in height, high BP, high sugar, risk of death, etc.).

Marrying a pregnant woman

Q:

1. If a female conceived a baby from her illegal relationship before nikaah and married the same male afterwards, will the nikaah be valid one?

Does it have to be repeated?

2. If the conceived female married another male instead of the actual father of the fetus (hiding the matter), will the nikaah with the pregnant female be valid?

Marrying one's ex husband who wants to accept Islam again after becoming an Atheist

Q: I'm a Muslim and my husband left Islam a year ago and became an Athiest. Since then I am living seperately from him and tried my best to bring him back for the sake of our kid. Now he wants to become a Muslim again. I want advice on what should I do in terms of Islamic law since our marriage was over when he became an Athiest. I want to reconcile as well. But whats the procedure for me and also for him to return back to Islam?