When you are a stepmother, you may be wondering why your stepdaughter shares the same date as you. Perhaps your relationship with your daughter isn't as strong as you would like it to be. You might feel like you're a rival in your relationship, but the truth is that stepdaughters are different animals altogether. Stepmothers tend to be more invested in shaping and controlling the behavior of their children than their stepfathers. They are also more likely to enforce rules, discipline, and hygiene. Stepfathers, on the other hand, are often absent-minded and resentful. Consequently, their relationship can be shattered, and the children may suffer..