Is it advisable to end an engagement where the fiancée's mother frequently interferes and participates in all details, causing continuous disagreements?

The suitor should treat his fiancée before the marriage contract as a non-mahram, limiting conversation to what is necessary. With the exaggerated interference of the fiancée's mother, the fiancée must act wisely. If she does not respond and fears the relationship will be ruined, it is permissible to break off the engagement for a benefit or to avert harm.