Considering this "minor" since IIRC, it's revealed in the first episode. Should not be an obstacle to aliasing.
Currently, most images of her are tagged with both raynare and amano_yuuma (her fake civilian name in her initial appearance), and this is pointless without any differentiation. Most images are of official cards, and IMO, they should only be tagged with the name provided. All non-card images (most deleted anyway) should probably be Raynare as they show her in fallen angel outfit or with fallen angel allies. If the names are not going to be differentiated, then they should just be aliased.