What is the ruling of Islamic law regarding marrying a divorced Muslim woman who has a child and refuses to leave a non-Muslim country, given that I fear for the upbringing of the children in that society?

The preponderant view is that a woman has the right to stipulate residing in her country and not leaving it. However, a man is advised not to agree to this condition. If the woman insists on it, he should leave her and seek another, because residing in the lands of the disbelievers carries immense risks to religion and morals, and is only permissible in specific cases and under defined regulations.