Is it permissible to request a divorce from the husband under the aforementioned circumstances, and would the maternal uncle bear the sin of this divorce if it occurs?

The husband must fulfill the wife's condition that her children from him reside with him. The wife is permitted to request a divorce if the husband is unable to provide for her maintenance. If he refuses, she may refer the matter to the Sharia judge. The maternal uncle is not obliged to spend on the wife or her husband, and his endeavor to separate them is forbidden and considered a grave sin. The questioner has the right to request a divorce if her husband is unable to provide maintenance, and if he refuses, she may refer the case to the Sharia court to compel him to divorce or provide maintenance. It is not advisable to rush in requesting a divorce as long as the husband treats her well.