WOBURN (CBS) – Lauren Astley’s mother wept quietly in the courtroom Tuesday as she saw video of her daughter at work at the Natick Mall on the last day of her life.

WBZ NewsRadio 1030′s Carl Stevens reports

Astley’s former boyfriend, 20-year-old Nate Fujita, is on trial in Middlesex Superior Court charged with Lauren’s murder.

In an emotional day in court, the prosecution used the video to establish a timeline of Astley’s last day alive in July 2011.

Fujita’s attorney asked mall security officer William Minnucci if there were complaints filed about Fujita harassing Astley.  Minnucci said there were not.

Last week, Astley’s co-workers said she talked about being afraid the night she left work to meet Fujita. That was the last time they ever saw her.

Astley’s body was found strangled in a marshy area on July 4, 2011.

Prosecutors say Fujita tried to reconnect with his old Wayland High girlfriend, but Astley wouldn’t have him back and so he killed her.

Fujita is claiming an insanity defense.