The Danger Of Vanity

The evil queen wants Snow White dead as she cannot accept the fact she is not the most beautiful woman in the kingdom. This vanity destroys her in the end.

Vanity - inflated pride in oneself or one's appearance. Usually viewed as a negative, it is one of the Seven Deadly Sins.

The framework of the deadly sins is used to help people curb their evil inclinations before they can fester, with specific focus on pride and greed, thought to be the sins that sever the soul from grace, the very essence of evil, with these two underlying all other sins.