i am asking this question on behalf of my wife.when she was 14, she made hajj with her mother, 2 sisters and one of those sisters husbands, who is obviously non mahram. she was unaware at the time that a women needs to make hajj with a mahram, is her hajj valid or does she need to repeat the hajj ?. please give some evidence/statement of the scholars on this, jazakallaah kharyan.