Looking at it objectively she was a hostage, raped, and developed Stockholm syndrome. She had genuine feelings for her but that was tainted by the power imbalance of the relationship.
So otome is in love with kazura or at the very least possessive of her and knows kazura loves her but instead of reciprocating she instead chooses to play perpetual mind games with her. I've seen a lot of the toxic yuri tropes but this is definitely one for the books.
Ignore monkey. they found this manga by accident and now spend every update hoping it turns het despite everyone telling them that it's not ever going to happen.