In a nutshell, she's a hacker and a former killer for hire who was redeemed by her absolute faith and devotion to an all-seeing, benevolent (and female!) Artificial Super Intelligence. And much like Kay and the Rogue One crew, Eluvio is also her afterlife.

I wasn't able to tag Kay's first post because RL kept me busy back then, or she would have already freaked out at him already, haha.