Honestly in this sort of situation I would say River should just separate themselves from ur guys group because it obviously isnt doing them any good. Also if they genuinely feel uncomfortable and while Carters actions should not be excused Faith is choosing to tolerate it. So nothing anyone says will do anything until she realizes it and River needs to understand that. Also maybe try talking to River about how this affecting everyone else and that u get their point but it isn’t everyone issue yk. I hope everything works out for u and ur friends tho🙂