How can one deal with a Muslim neighbor who does not pray and denies the torment of the grave and the afterlife, arguing that God is just and will not punish her because He did not consult her regarding her creation?

Abandoning prayer is a major disbelief that expels one from the fold of Islam, and denying what Allah or His Messenger has revealed, after knowing it, is also disbelief. A woman's objection to Allah, claiming He did not consult her before her creation, is disbelief in Allah and an objection to His judgment and wisdom, for Allah is not questioned about what He does, and He disposes of His dominion as He wills. It is advisable to call this woman to Allah and explain the danger of her state. If you lack knowledge, we advise you to distance yourself from her and abandon her.