Will a sister be held accountable for disagreements between her sister and their mother if the mother is often in the wrong?

A daughter must obey her mother and not disobey her in what is right, and be gentle in speech and action with her, in compliance with the words of Allah Almighty: "So do not say to them, 'uff,' and do not repel them but speak to them a noble word. And lower to them the wing of humility out of mercy and say, 'My Lord, have mercy upon them as they brought me up when I was small.'" And it is obligatory to show kindness to the mother and strive for her contentment, based on the words of Allah Almighty: "And with parents, good treatment," and the words of the Prophet, peace and blessings be upon him: "The pleasure of Allah is in the pleasure of the parents, and the displeasure of Allah is in the displeasure of the parents."