Is raising a child and helping one's parents and in-laws considered an obligation upon a woman, or is she rewarded for it, knowing that this is difficult for her? And what is the ruling on praying Fajr as a make-up prayer after being overcome by sleep due to staying up late with the child, and is this considered a sign of religious weakness?

Your dedication to raising your children and caring for them, and your service to your husband, and your assistance to your family and his family—all of this carries great reward from Allah, as Umm Salama said: "O Messenger of Allah, will I be rewarded for the children of Abu Salama? I spend on them, and I would not leave them thus and thus; they are indeed my children." He replied, "Yes, you will be rewarded for whatever you spend on them." As for sleeping through prayer, there is no sin in it as long as sleep overtook you, for the Messenger of Allah, peace and blessings be upon him, said: "There is no negligence in sleep; rather, negligence is upon him who leaves a prayer until the time of the next prayer enters." This does not indicate a weakness in faith, for the best of creation, our Prophet Muhammad, peace and blessings be upon him, also missed prayer due to sleep.