Caitlin is Kathleen's biological daughter with Fred Atwater. At the time her mother died, Caitlin was a student at Cornell University. Following her mother's death, she told the press, "My mother and Mike had an absolutely loving relationship and there is no way that either of them would ever wish any sort of harm on the other one." After seeing autopsy pictures and learning about Michael's affairs with men, however, she became a key witness on the prosecution's side. Her aunts Lori and Candace also believe that Michael murdered their sister.
Caitlin later sued her stepfather in a wrongful death lawsuit and was awarded $25 million in damages. Caitlin is not likely to collect any significant amount from Michael since he's indigent, but her lawyer explained that the point of the lawsuit was so that Michael would not be able to profit from the case.
Now going by her married name Caitlin Clark, she is the mother of twins and lives in Northern Virginia with her family.