Technically she's bi; when 2018 came around there was an official tweet of 3 characters with a flag representing their sexuality: /img/e-hentai/heylx5u763w31.jpg
ALSO, you do know that the YAOI fandom tends to make canonical Heterosexual males from different series gay right? Hell these hentai fandoms of any kind tend to blend the canonical sexuality of EVERY character that doesn't match the content of the hentai fandom.
So with all due respect, you can't really complain when this is already done with every character of any fandom regardless of gender and their sexuality...in this case, she is considered bisexual by the creators.