Prosecutors said authorities used video surveillance to identity a suspect, and in the time since the attack, Pazienza tried to avoid being arrested.
Gustern hit her head and was critically injured March 10 after she was shoved to the ground on West 23rd Street in Manhattan's Chelsea neighborhood. She died on March 15.
At the arraignment, prosecutors said an eyewitness went to help Gustern, and that she was able to give police an account of what happened before losing consciousness. "She's a very moral, right, just person, who went to high school, went to college, has a job, has a fiance, has a family, and for her, this is, she's in the Twilight Zone," defense attorney Arthur Aidala said Tuesday, CBS New York They said she deleted social media, as well as a web site for her upcoming wedding, and stopped using her cell phone.