It is the responsibility of their father to look after them. As long as your own father is taking care of you and your daughters, you must not work.

Is it obligatory for a single mother to earn for her kids, even if her father is taking responsibility of the mother and grandkids, and they’re not being a burden to him financially? i’m a single mom and i’m so scared of failing my daughters, and more so failing as a muslim, thats why i’m writing almost everyday with doubts