I like Perdita. It’s different and the meaning “lost spirit” is intriguing. Enid Perdita Alder. EPA being the initials is a little funny, but…
I also thought of “Metanoia.” Enid Metanoia Alder. That means repentance or renewal. Think of Snape or Apostle Paul: they betrayed their loved ones to the death and repented by the daily works of their lives and their own eventual self-mortifification. It means “a change in spirit”.