"That's what I want to know, because everybody's talking about it—that this is a show," she said, CNN reported Monday.
While she maintained the blood at the scene was paint, Tsarnaeva said she had not seen actual footage of the blasts.
She spoke differently when asked about the three people killed and dozens injured in the bombings.
"I really feel sorry for all of them," she said.
Still, she does not believe her sons, Tamerlan, 26, and Dzhokhar, 19, Tsarnaev were involved.
The father of the two men, Anzor Tsarnaev, is expected to leave his home in Dagestan as soon as Friday to travel to the United States to assist in the investigation. His wife, who skipped bail in 2012 on felony changes of shoplifting and property damage in Massachusetts, will not be coming with him.
Some 33 of the more than 260 people injured in the bombings were still hospitalized Wednesday night.
Notable deaths of 2014 [PHOTOS]
U.N. investigator: prosecute North Korea