Is it permissible for a man to divorce his obedient but non-observant wife out of fear for the future of his children due to her influence, knowing that her family is also non-observant?

Divorce was legislated out of necessity, and its origin is reprehensible.

Divorce due to the husband's fear for his children from the wife's family is not a justification for it, for all matters are in God's hands. As long as the wife is obedient, performs her duties, and is pleasing in her religiosity, divorcing her is disliked and may even reach the point of being forbidden.

A woman does not bear the sin of her family, in accordance with the Almighty's saying: "And no bearer of burdens will bear the burden of another."

The husband should work on reforming his wife, and her family will not harm him after that.