so a little back story Valerie is the main oc the other girl is her little sister. Valerie was going to be the queen of the angles but thought her sister would do better so she gave the crown to her sister. after the delves learned that they had chosen a younger girl to be queen in the future they decided to kidnap her. The angles are debating whether to try to save her sister (who doesn't have a name yet) because they know it will mean war between delves and angles. Valerie decides to go get her herself but because she had to kill to be able to get to her she is neither devil nor angel.

so her sisters name is Angelica.