Clearwater , Florida ( CNN ) -- Prosecutors in Pinellas County , Florida , on Wednesday sought to convince jurors that a young woman accused of stabbing to death an 18-year-old woman last year did not act in self-defense but intended to attack her because both women were fighting over the same man . Rachel Wade , 20 , is accused of killing Sarah Ludemann in the early hours of April 15 , 2009 . According to court records , the two women were involved with Joshua Camacho , then 20 , and over a period of several months engaged in a series of nasty confrontations over him via MySpace postings , text messages and voicemails . The situation escalated when the two women confronted one another outside a friend 's home . Wade stabbed Ludemann , who was unarmed , twice in the chest , and Ludemann died at the scene . The defense is arguing that Wade , at 5-foot-4 and 110 pounds , acted in self-defense -- fearing for her safety when she was confronted by Ludemann , 5-foot-9 and 166 pounds , and two other women . But in the opening day of the trial Wednesday , the prosecution sought to portray Wade as the initial aggressor , who waited for Ludemann with a knife and barely gave her time to get out of her vehicle before attacking her . Four witnesses to the night of the confrontation testified before the six-person jury Wednesday : Janet Camacho , the sister of Joshua Camacho and a friend of Ludemann 's ; Jilica Smith , a friend of Janet Camacho 's ; Ashley Lovelady , Ludemann 's best friend ; and Dustin Grimes , a friend of Wade 's ex-boyfriend . Smith and Janet Camacho both testified that while they were driving to a McDonald 's with Ludemann in her minivan , they heard their friend on the phone with Wade and said they heard Wade tell her , `` I 'm going to stab you and your Mexican boyfriend . '' Ludemann grew upset , according to the testimony , and learned of Wade 's whereabouts when she happened to pass Lovelady on the road on their way to McDonald 's . Lovelady told the women that she had seen Wade at her ex-boyfriend Javier Laboy 's house , according to Camacho . Ludemann then rushed over to Laboy 's house , where Wade was at her car with a knife nearby , Janet Camacho and Smith testified . Ludemann pulled her minivan to an abrupt halt , its nose about 5 feet from the front of Wade 's Red Saturn , and began to get out of the vehicle , according to testimony . Within a matter of seconds , prosecutors say , Wade grabbed the knife and approached the driver 's side of the minivan and attacked Ludemann between the driver 's open door and the minivan . However , Grimes , the final witness of the day and who was standing outside Laboy 's house when the stabbing occurred , testified that the three women jumped out of the minivan at the same time and approached Wade . He said the attack occurred between the two cars . His testimony , given via videotape from his military posting overseas , could be key to the defense as it seeks to build its case around self-defense . Prosecutors played the 911 call placed on the night of the incident by Smith , who can be heard screaming that `` Rachel just ... stabbed her . '' Both Smith and Wade wiped away tears as the audio recording was played . Prosecutors are expected Thursday to play other recordings of threatening voicemail messages left on Ludemann 's cell phone by Wade in the eight months before the attack . In an August 29 , 2008 , voicemail , Wade can be heard saying `` I 'm guaranteeing you I 'm going to ... murder you , '' according to testimony at a prior hearing in the case . The jury will also hear from police officers who responded to the incident , as well as the medical examiner . Wade , who was 19 at the time of the killing , faces life in prison -- a minimum of 20 and a half years -- if convicted of second-degree murder in the case . In Session 's Beth Karas contributed to this report .
Rachel Wade is accused of stabbing to death 18-year-old Sarah Ludemann . Prosecutors say Wade planned the attack because both women were fighting over the same man . The defense says Wade acted in self-defense . Wade faces up to life in prison if convicted of second-degree murder in the case .