My parents have been at odds for many years, but now they are divorced because of their sister's support, and they can't reach an agreement. What should I do as the eldest daughter?

Although it is better to tear down ten temples than to break a relative, it is obvious that your parents' marriage is no longer sustainable and will only make the whole family miserable. Now that your mother is financially independent, in this case, you can fight for the custody of your child when you divorce, and let your father pay the alimony on time. I will graduate in one year, and I can support my family together. Life will gradually get better then. Marriage is gone, but family ties are still there. I wish your family all the best.