Most people playing with her romance in mind will never think: "Hmm, Shadowheart must be poly" with everything she does and says outside of interactions with Halsin. Why? Because most people tend to play as monogamous. Besides, even if she were secretly poly it still isn't a good thing at all. I'd 100% like to know if she's into that kind of thing before so I don't get emotionally invested in her and feel stupid later.