She moved to Appaloosa Plains as a teenager and built the Halliwell Manor. She met Baldwin Svard shortly after aging into a young adult and they married. Their first daughter, Ruelaine Halliwell was born shortly after their marriage. Soon after, Cedrella became pregnant once again and gave birth to Paul Halliwell. While Cedrella and Baldwin did not want more children, Cedrella became pregnant with a third child, Helene Halliwell. Afterwards, Baldwin became fed up with the amount of magic in his life and divorced Cedrella. Her mother, Cecilia Halliwell, moved into the Manor to help raise her grandchildren.
Despite her immense cryokinetic power and sharp intellect, she was killed as a young adult by a water demon. She had tried to blast him with her ice, but she underestimated his power and he did not freeze.
After her death, Cedrella's mother inherited the Manor and gained guardianship over her three grandchildren.