Psychology says sisters who behave like mothers are not controlling: Why some girls naturally become the second parent in the family

Psychology suggests that sisters who often behave like mothers are rarely trying to control everyone around them. More often, they are responding to years of learned responsibility, emotional attachment, and a deep sense of protectiveness. Humans are naturally wired for connection, and for some sisters, caring for others becomes one of the ways they express love and maintain that bond.

Raccontata daeconomictimes.indiatimes.com