HELLO! I HAVE A NAME:

Names: Alastair or Alastrina (for her "old name"); Alesta, Alex, or Alison as the modern equivalent.
Reason: I wanted to pick something that had direct ties with Scotland so all of them do, including the modern variations. Alastair, Alastrina, Alesta, and Alex are all a Scottish variation of the name Alexandra, which means "man's defender". I'm not sure what your character's stance is on humans, but I interpreted it to mean the defender of her clan rather than of humanity as she inherited their unique gift.

I tossed Alison in there since it sounds similar to the others, but it actually means "noble, exalted" which also ties into her background because she's royalty.