Is it forbidden for a daughter to refrain from seeing her sick father, despite her hatred for him due to his extreme injustice?

The father's right is great and is not forfeited by his injustice or mistreatment of his child. Allah commanded to accompany idol-worshipping parents with kindness. Al-Bukhari dedicated a chapter to honoring parents even if they commit injustice, and it was reported from Ibn Abbas that whoever wakes up for his Muslim parents, seeking reward from Allah, will have two doors of Paradise opened for him. If he displeases one of them, Allah will not be pleased with him until that parent is pleased with him, even if they have wronged him. Therefore, it is forbidden for you to prevent your father from seeing you, and it is obligatory for you to honor him and repent to Allah for cutting ties with him.