She became Muslim and got married, but herm other is still receiving a pension

No File Exists
Check below answers in case you are looking for other related questions:
Ruling on accepting hospitality from one whose wealth is a mixture of halaal and haraam
Ruling on telling the authorities about one who is stealing

No File Exists
Related Answers:
Money earned from doing forbidden things
He got a prize from the lottery company and he did not know
Kuwaitis being paid through the United Nations for the delay in compensation from the Iraqis
Ruling on accepting hospitality from one whose wealth is a mixture of halaal and haraam
Ruling on telling the authorities about one who is stealing

Recommended answers for you:
Our attitude towards Yazeed ibn Mu’aawiyah
Ruling on offering congratulations on the occasion of Eid, and shaking hands and embracing after the prayer
What is to be said in the Tashahhud of a two-rak’ah prayer?
Is it permissible to sell haraam things like pork to non-Muslims?
The etiquette of eating, with detailed evidence