What are the educational methods for dealing with an adult daughter who repeatedly lies despite her religious commitment and knowledge of the prohibition of lying?

We advise supplicating for her righteousness and uprightness, building a bridge of affection and kindness with her, and refraining from punishment by beating, as it may harm the relationship. Also, be a good role model for her in truthfulness and morals, practice gentleness in dealing with her, overlook some matters, and do not diminish her good deeds but rather encourage her in them.