My child's father is completely unable to provide maintenance. Is his side of the family also responsible?

In the Syafi'i school, when the father is truly unable, the duty of child maintenance (nafkah) can pass to the paternal grandfather in certain circumstances. But this ruling has details, such as each party's ability to pay and who is still alive. Start with a polite discussion with the father's family. Many grandparents are willing to help their grandchildren if approached kindly, not with demands. At the same time, check zakat assistance and the Social Welfare Department (JKM) for urgent needs. For a formal claim, an officer at the state Islamic religious affairs office or a syarie lawyer can explain the options in your case. Refer to the zakat and welfare assistance page.