Her mother, Terry (Mercedes Ruehl) pretends Charley is hers, allowing Jacey to lead a relatively normal life as she prepares to graduate.
Her opinions lead health teacher Donna Cooper (Jane Krakowski) to take a special interest in her.
Donna and Bob, unable to conceive, are devastated to discover their latest round of in-vitro fertilization has failed.
Although she lies, other students witness the interaction and begin to believe Jacey is Charley's mother, subsequently bullying and ostracizing her.
Jacey turns to Donna for advice, who convinces her to tell Terry she wants to be a proper mother figure to Charley.
At school, Jacey gives a speech on sex education and teenage pregnancy, using examples from her friends from the support group.