In enmeshed families you age in reverse.
To other enmeshed adult children:
Like a Benjamin Button of sorts, you start your life as the parentified child, the caregiver of the adults' emotional needs. You're called wise and mature for your age. You can take or yourself, as well as your parents. But around the time of individuation, when your peers are going off and becoming independent, you start going backwards. Your parents treat you as incapable or fragile. They need to make all the decisions. Where you could once take care of yourself as a child, you now don't have the skills to take care of yourself as an adult. You see friends and schoolmates reaching milestones and leading normal lives, but you're paralyzed buy guilt, fear, and anxiety. There is grief in feeling robbed of a normal childhood.
But the milestones do come later, though they may look different. The development that was delayed is not impossible to achieve. The task now is to become the adult you needed but never had. The one to protect you, believe you, and to help you build a life for your own.