Board Thread:Show-Related Questions/@comment-180.150.81.50-20190917173927/@comment-39862840-20190917182115

Becca had worked with the Eligius corporation before the apocalypse. Nightblood had been created as a way to cure cancer but Eligius needed it to protect people from solar radiation, specifically the Eligius 3 explores. In regards to Becca, she created the flame after apocalypse 1. Hope this answers your question :)