Are the matters claimed by the first wife acceptable, and is the questioner's marriage to her husband considered an injustice to her, and did their previous friendship create a relationship that should have prevented her from marrying her husband? And is it among the rights of the first wife to compel her husband to divorce his second wife?

It is not permissible for a woman to ask her husband to divorce his second wife, because the Prophet, peace and blessings be upon him, said: "It is not lawful for a woman to ask for the divorce of her sister to empty her plate and to marry, for she will only have what has been decreed for her." This prohibition is clear and aims to emphasize the seriousness of the matter to the woman, and for her to be content with what Allah has apportioned for her. As for her kindness to you, it does not permit her to ask for your divorce. You must be patient and ignore her, and be kind to her as much as possible.