. >> reporter: but before she faced those cameras, jessica anderson, her best friend from long before she transitioned, helped her get ready. >> when i got, like, done with her makeup, this was the first time, like, i ever seen my best friend look at herself and just be like, "i look really, really pretty. like, i look like a girl." and she was really, really, really beautiful that day. >> i kind stand before you while in other scenarios, we are at a memorial. our time to seek justice is now. if not now, when. >> reporter: a brave, beautiful moment, but muhlaysia would never see justice. just weeks after that rallying cry, in the quiet of an early morning, muhlaysia was found dead. >> detectives found booker. >> muhlaysia booker was shot and killed. >> the victim was positively identified as muhlaysia booker. she was left here on the side of a road. >> i just really can't imagine somebody doin' that to her. >> reporter: dallas police arrested this man for her murder. his trial is pending. his alleged motive is unclear. >> muhlaysia was somebody's daughter. muhlaysia booker was human.