Is it permissible to cut off one's mother and sister and abandon them due to their immodesty (tabarruj) and their pursuit of a lifestyle contrary to Islamic law, especially with the threat of marrying a non-Muslim to obtain citizenship, all in order to preserve one's religion?

Displaying oneself immodestly (tabarruj) and trivializing the rulings of Islamic law are grave evils. The marriage of a woman without her guardian (wali) or the marriage of a Muslim woman to a non-Muslim is invalid by consensus (ijma'). The mother does not have the right to seek divorce to prevent the father from removing her hijab (definition), and the father is correct in his stance. Continue advising them gently. Do not abandon the mother even if she does not respond to the advice. The sister should be abandoned if such abandonment will have an effect on her. Residing in non-Muslim countries increases deviation, and it is advisable to emigrate to a Muslim country if possible. The marriage of a Muslim woman to a disbeliever is forbidden and invalid. Residing in non-Muslim countries necessitates safeguarding one's religion and cooperating with Muslims.