. >> for 19-year-old daniela guzman, that journey has only just begun. this is guzman's first time in jail. she arrived 12 hours ago and has spent most of that time in a holding cell with ten other women. >> out of all of them, i was the youngest. out of all of them, i was the only one facing life. i ended up here today because i just couldn't keep running anymore. and it was eating me up inside. >> guzman has been charged with murder. a homicide that has been under investigation for the past two years. she has not yet entered a plea. >> these are your jail clothes. you can only keep what's in that bag, okay? i need you to change your clothes, all your street clothes are going to go in that bag, okay? don't keep anything personal. i'm going to come back and get your clothes in a minute. i'll give you time to change, okay? >> guzman says one day earlier she was asked to come to a police precinct in the oakland suburb of newark for the questioning about a stabbing death of a classmate that had occurred two years earlier. the victim was a high school footbal