Y/n is Tony starks daughter he had a one night stand with her mother which lead to her. Her mother she did not tell Tony she existed. Or did not tell y/n that her father was the Tony stark only that he was a playboy who left first sigh of responsibility. Y/ns mother kept her but at what cost she drove herself in to depression with her boyfriends who were abusvie drug addicts. She eventually die of either overdose or suicide the paramedics said it was most likely a combination. (Read premise for more information )