@armering
It was mentioned her last name is du
So we havent seen another Du Yue, except Du Xiao Yue.
Also, they wanted to marry her off to Luo family...
Which he just happened to kill the head family off...
I think that Young Master is part of the Lou family.
So im sort of confident that is his ex-fiance, which the author magically forgotten she had purple eyes, and a mole.