Is proselytizing an individual obligation (fard al-ayn) or a collective obligation (fard al-kifayah)? Is it permissible for women? Is what my fiancée does by way of da'wah activity, along with the accompanying transgressions, something beloved to Allah, so I should leave her to it, or is it not obligatory for her, so I should discuss it with her?

Calling to Allah is obligatory upon everyone according to their capability. It is permissible for a woman to join a da'wah group that adheres to Sharia guidelines. It is permissible to lie to the mother to go for da'wah matters if the Sharia interest cannot be achieved except through that, and the mother does not give permission for the truth, and going is necessary and does not result in harm. However, if the mother does not prevent it or if hints (ma'arid) can be used, then lying is not permissible. The condition of going out five hours a day is exaggerated and may affect marital duties; less time is recommended. The condition must be fulfilled if it has been agreed upon. A fiancé is a stranger to his fiancée, so looking or being in seclusion with her is not permissible.