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Wearing dark sunglasses, a long wig and a baseball cap, Casey Anthony repeatedly invoked the Fifth Amendment Saturday morning as she answered questions in a deposition for a civil case against her.
Anthony, 25, is being sued
by Zenaida Fernandez-Gonzalez, a Florida woman who claims she suffered damages when Anthony told police a nanny by the same name had kidnapped her 2-year-old daughter, Caylee.
During her murder trial, Anthony's lawyer
, Jose Baez, acknowledged that she had made up the story and that such a nanny never existed.
Although Anthony was clearly irritated, she was "composed" during the deposition, attorney John Morgan told the Orlando Sentinel
. "She did not want to be there," Morgan said, adding that her nostrils flared and she breathed deeply during the 45-minute questioning.
Morgan said that Anthony answered general questions about her presence during the trial – where she was acquitted of murdering
Caylee – but she invoked the Fifth Amendment when asked specific questions about her numerous lies.
For more on Casey Anthony's true-crime drama, based on PEOPLE's unparalleled access at key moments of the case, buy PEOPLE's book Outrage
, available now at people.com/caseyanthony