Our guess is that she won’t exactly be a peaceful person in her second life, as she can be seen fighting the Defenders in the recently-released trailer.
At the beginning of The Defenders, Elektra has almost no memory of her life before she was resurrected, essentially making her an entirely new character.
One of the big reveals of the last season of Daredevil was that Elektra was a person of important significance to the Hand, a weapon known as a Black Sky.
While we aren’t entirely sure of what that means just yet, it’s important enough for the Hand to bring Elektra back to life with their special containers full of tainted blood.