What is the appropriate course of action regarding a wife who repeatedly travels alone under the pretext of a change of scenery or study, disconnects her communication during these trips, and upon her return, romantic messages are discovered on her phone, while there is no direct proof of infidelity and there are children involved?

We advise you to be frank with your wife and explain to her that a righteous wife safeguards her husband in herself and his property, and that neglecting this trust angers Allah and destroys the family. If she responds and shows signs of rectitude, then keep her honorably and do not divorce her. However, if it becomes clear that she is in an illicit relationship and has not repented, then divorce her, for there is no good in condoning immorality. The issue of children is manageable, as Allah has legislated rules for their custody. A man must fulfill his right of guardianship over his wife, close the doors to temptations, establish Allah's boundaries in his home, cooperate with his wife in obedience to Allah, and then have a good opinion of her.