At her daughter's trial in Orlando, she told defense attorney Jose Baez she looked chloroform up when searching for information about chlorophyll because of a scare regarding hand sanitizers, the Orlando Sentinel reported.
Cindy Anthony also said she looked up other terms involving trauma and injuries after her friend was in a car accident and that a stain in the trunk of Casey Anthony's car was there when they purchased it, the report said.
The prosecution has strongly suggested Casey Anthony conducted the online searches and toddler Caylee's body made the stain, the Sentinel said.
Meanwhile, a lawyer said in a broadcast interview her parents don't believe Casey Anthony is innocent.
However, George and Cindy Anthony don't want their 25-year-old daughter to receive the death penalty if she is convicted of killing Caylee, CNN reported Thursday.
Casey Anthony is charged with seven counts in her 2-year-old daughter's 2008 killing, including first-degree murder, and if convicted she could be sentenced to death.
Attorney Mark Lippman's statement about George and Cindy Anthony was discussed on a CNN program Wednesday. It isn't known if the parents' comments will have any impact on Anthony's trial.
"But this is important and they wanted me to stress this," said Tuchman. "They love her, they support her and they do not want her to get the death penalty and they will do all they can to avoid her getting the death penalty in this case."
Prosecutors claim Casey Anthony used chloroform to render her daughter unconscious before covering her mouth and nose with duct tape, suffocating her.
Recent testimony has focused on materials -- including air -- found in the trunk of Anthony's car. Lab tests have indicated the presence of chloroform, and also detected the presence of human decomposition.