Board Thread:Questions and Answers/@comment-44996737-20200206022806/@comment-36009152-20200719194539

It seems more the case that Shinoa was truly loyal, it doesn't have to be fanatical. In a way she got along better with Guren than anyone else and remained loyal to his cause for some time. That Yu was deemed more important doesn't diminish the loyalty she had, if anything it just indicates how strongly Shinoa feels regarding Yu, which for this thread is a suggested reason why Shinoa likes Yu like that.