If the husband has died and the woman wants to marry someone who is religiously committed and of a good character, the guardian is obliged to arrange that Marriage, whether her guardian is her father or her son, if the father is not there. It is not permissible for anyone to prevent her. It makes no difference whether the woman is old or young, or whether she has children or not. The fact that the woman is old is not a barrier to her getting married because there are many benefits of marriage, such as the woman’s need for someone to look after her etc.