Teen friend of Trayvon Martin to return to stand in Zimmerman trial The star prosecution witness in the murder trial of George Zimmerman will return to the stand Thursday to face a second round of questioning from the former neighborhood watch volunteer's defense team. On Wednesday, 19-year-old Rachel Jeantel grew emotional and at times testy as she answered questions about her cell phone conversation with Trayvon Martin in the moments before he was shot to death. Jeantel told jurors the Florida 17-year-old said he was being followed by "a creepy-ass cracker" just before the fatal confrontation with Zimmerman. She said she warned Martin to walk away, saying "it might be a rapist." Martin, she said, told her he was going to try to "lose him" and get to his father's fiance's home in the gated community in Sanford. But Jeantel said as she remained on the phone with Martin, the man who was allegedly following him reappeared, prompting the February 2012 confrontation, of which she heard the initial moments. He said, 'Why are you following me for?', and then I heard a hard breathed man come and say 'What are you doing around here?' Jeantel said. Jeantel testified she heard Martin's phone headset fall and then Martin say "Get off!" The phone went dead shortly after and Jeantel says she didn't speak to Martin again. Previously, Jeantel came under fire for lying about not going to Martin's funeral because she said she was in the hospital, which was untrue. In her testimony, she said she didn't go because she felt guilty. Martin's parents have said they believe the cries for help heard by neighbors came from their son, while Zimmerman's father believes the cries belong to his son. Defense attorneys successfully argued against allowing prosecution experts who claimed the cries belonged to Martin. Jeantel testified that she believed the cries were Martin's because "Trayvon has kind of a baby voice." Defense attorney Don West challenged that, claiming she was less certain in a previous deposition. Jeantel also explained that she had initially lied about her age -- she claimed to be 16 -- to protect her privacy when she was contacted by an attorney for Martin's family to give a recorded statement over the telephone on what she knew about the few moments before Martin's encounter with Zimmerman. While being cross-examined, Jeantel had several testy exchanges with West, including one moment when she prompted the defense attorney to ask his next question: "You can go. You can go. At one point, Judge Debra Nelson had to calm Jeantel down. Additionally, when the judge asked if both sides wanted to break for the day, prosecutors said they'd like to continue, believing the testimony could take another two hours, to which Jeantel reacted with surprise, repeating, "Two hours?" Instead, the judge decided to continue the cross examination Thursday, carefully instructing Jeantel to return at 9 a.m. and not discuss her testimony with anyone. Zimmerman, 29, could get life in prison if convicted of second-degree murder. Zimmerman followed Martin in his truck and called a police dispatch number before he and the teen got into a fight. Zimmerman has said he opened fire only after the teenager jumped him and began slamming his head against the concrete sidewalk. Zimmerman identifies himself as Hispanic and has denied that his confrontation with the black teenager had anything to do with race, as Martin's family and its supporters have claimed. Fox News' Serafin Gomez and The Associated Press contributed to this report