A female who doesn't share BOTH her parents with another girl. If a girl has only brothers, shes an only daughter.
If her mom has a baby girl with her step-dad, she is her dad's only daughter but not her mom's only daughter. If her dad has a baby girl with her step-mom AND her mom has a baby girl with her step-dad, she is not an only daughter.
If her mom has a baby girl with her step-dad, she is her dad's only daughter but not her mom's only daughter. If her dad has a baby girl with her step-mom AND her mom has a baby girl with her step-dad, she is not an only daughter.
by Anna Lynn Sanders May 21, 2010