Cheryl is first seen as Kima Greggs' live-in partner; she works in the television news industry and often worries about Kima's safety as a police officer. She hopes that Kima will take a less dangerous job and start a family with her. She also appears to do most of the cooking and cleaning in the relationship.
After Kima's shooting, Cheryl insists that she take a desk job. Kima acquiesced for a time, but eventually returned to investigative work in the second season. Cheryl finds this hard to understand, until Kima showed her the conditions in which fourteen girls were murdered. Cheryl jealously insists on accompanying Kima when she went to interview a contact in a strip club.
In season two, Cheryl becomes pregnant by artificial insemination, and in season three, the couple have a young baby boy. Kima begins to spend less time at home, and Cheryl was left to deal with motherhood alone. Kima eventually realizes she does not want to be a parent, and moves out of their shared home. Kima is behind on her child support for much of season four, but gets some overtime in homicide and visits Cheryl, who is now happy with her new partner.