In love with Mafia policewoman

Isa a girl in her seventeen raised by a single mother who didn't know her mother belonged to a mafia group died unjustly as she witnessed her death but didn't see the killer's face so she wants to seek revenge by avenging her mother's death by finding her mother's killer and joining her mother's mafia group to become strong as she was scouted by her mother's step brother the leader of the mafia group.... who trained her to be strong as she entered the government police agent to find and reinvestigate her mother's death.....

find out who killed her mother and why?