In the answer to question no. 2127 we have discussed the rulings on marriage in detail, and we have defined who is the guardian for marriage purposes.
From this it is known that the maternal uncle is not one of the woman’s guardians with regard to marriage. If her father refuses to spend on her wedding and on preparing her for marriage, then does her maternal uncle have to do that in this case?
Shaykh Ibn Jibreen (may Allaah preserve him) told us that the maternal uncle is not obliged to spend on her; in this case the closest male relatives on the father’s side are the ones who are obliged to spend, such as her brothers and paternal uncles; or the husband has to spend it and it becomes part of her mahr.
And Allaah is the source of strength.