What about a woman who died and left behind a husband, a maternal half-brother, and two maternal half-brother's sons?

If a woman dies, leaving behind a husband, a maternal brother, and two maternal nephews, the inheritance is divided as follows:

The husband receives one-half due to the absence of children for the deceased, based on the verse: (And for you is half of what your wives leave if they have no child.) An-Nisa/12. The maternal brother receives one-sixth as a fixed share and the remainder by ردًا (return); based on the verse: (And if a man or woman leaves no parents or children but has a brother or a sister, then for each one of them is the sixth), and the return is based on the hadith: (Give the prescribed shares to those entitled to them, and what remains after the prescribed shares, give to the closest male relative.) The two maternal nephews do not inherit because they are from among the relatives by blood (dhawu al-arham), and dhawu al-arham do not inherit when there are heirs with fixed shares or agnates for the deceased.