Breakthrough

I did it! I finally found some material related to her! After countless hours of searching the internet, I've stumbled upon a website that has content on "The Legend of the Crimson Cloak".
(Im so proud of myself now)

Needle in a haystack? Ha! I've got you!

As the legend goes, the girl is known as "Crimson" (duh) or "purpura" in latin, she's supposed to be a banished god because she ignored her duties after falling in love with some dude. The dude was then killed by the other gods (poor fellow) and she's been looking for her lover's reincarnate ever since.

There's also a part that states she only appears during a full moon.

...werewolf vibe...