(someone's) mirror

Translations
отражение (кого-то)
She tries to be a good person because she wants to be her mother's mirror.
Она старается быть хорошим человеком, потому что хочет быть отражением своей матери.
Definitions
A metaphorical expression referring to a person or thing that reflects or reveals another's true self, qualities, or emotions, much like a physical mirror shows one's appearance. It can also mean someone who closely resembles or imitates another in behavior or attitude.
Words
mirror

noun
зеркало