Fresh off a strong debate performance in Las Vegas this week, presidential candidate Hillary Clinton is already digging in for her next big test: her testimony before the House Select Committee on Benghazi, where Republicans are expected to grill her about her use of a private email server when she was secretary of state.

Clinton isn’t going into this blindly. She has testified about the 2012 attack in Benghazi before, albeit in front of different committees. And she now has a model in someone who recently faced Republicans’ ire and came out standing: Planned Parenthood President Cecile Richards, who went before the House Oversight and Government Reform Committee on Sept. 29.

“Cecile was methodical, very straight forward, had a command of the information, was respectful, answered their questions even when they interrupted her, did not let herself get rattled,” a source close to the campaign said, referring to the repeated interruptions that became Internet fodder. “She was grounded, she just kept focusing on answering the question. Whenever she would get the same question, she would give the same specifics.”