It is a red flag! When a woman feels like her man chooses his daughters (sons, different topic) over her, the relationship is essentially over. A man should always choose his beloved even if he thinks she is wrong. When a woman doesn’t feel like the number one priority in her man’s life, she will never give him the nurturing, admiration, support and love he seeks. Women are essentially territorial and when a woman feels her kingdom is in jeapordy, she will either fight or shut down. Either way is detrimental to the relationship. Daughters will leave the nest some day. It’s best to teach them that the man in their life will make them the number one priority, just like their father did towards his beloved. If this is not taught in some matter, daughters will chose men that never make them a priority and they will forever wonder why their relationships are not satisfying, conflicted and distressed.