The woman accused of shooting at Rihanna's Beverly Hills mansion has pleaded not guilty to several charges, including attempted murder. Source: DAMEBK/Bauer-Griffin / Getty Ivanna Lisette Ortiz, 35, entered her plea at Los Angeles Superior Court on Wednesday, March 25, per the Los Angeles Times. Earlier this month, her public defender previously entered a plea of not guilty on her behalf, but later withdrew it in favor of postponing the arraignment, according to Orlando news station WESH.