Memories of SIGAL

Ovidia Origon.
A young girl saved by the nobility of a Mahican Harbinger named Marzelle, who raises her as a daughter.
Now, nine years later, just before the end of middle school, and haunted by a strange song, she must delve into Marzelle's past, her strange, adventurous life while she was in the Realm if she is to answer one fundamental question about her new identity:
Who is Ovidia LaMartin?