Am I obligated to spend on my father and grandfather, knowing that I am female?

A child, whether male or female, must financially support their poor parents if the child is wealthy. This is indicated by the Quran, the Sunnah, and scholarly consensus.

Likewise, financial support is obligatory for poor grandparents, as they are considered in the same category as parents regarding the obligation of maintenance. This is the view of the majority of scholars.

For the obligation of maintenance to apply, it is a condition that the person being supported is poor and the person providing the support is wealthy.