We are to love Christ and our love is to be so great our love for brother, sister, mother, father should be like hatred. Not actual hatred. If one family member is set against another it should be no shock to anyone it also says that "For I am come to set a man at variance against his father, and the daughter against her mother, and the daughter in law against her mother in law"....It is written. Pray for them, love them like Christ loved the church.