A woman entrusted her husband to build a house with her money, and after that, they separated. He told her that he invested a huge amount in the construction with her. Since there is no official proof, she does not believe him. Now, after some time, she wants to return some money to him for fear that she has wronged him or to give this money to their children who live in the house, which will eventually belong to them. She is responsible for their maintenance instead of his money. What is the ruling on this action?