Indeed. Which seems weirder still when she is suddenly like "oml they're all so right." out of no where. You do have options not to humour their advances, but she still seems to randomly ogle them even if you choose to shut them down. It all seems weird to me, like it really just doesn't flow and the main character goes back and forth ALOT, in the absence of options, perhaps. Which I AM hoping that this is something that does get fixed when more options are added, but it is something that really needs to change for the sake of character consistency.
As I've said before, the love trope just isn't necessary. They have these characters attempting to justify and explain the science of this world which is what I love so much about the world building they've done(confusing plot aside). The world seems cool and they're implementing interesting rules for their world in which I do not believe an ability activated by "love" just doesn't seem to fit. They could be wrong, there is obviously a lot they don't know, yes and yet that seems to me like all the more reason that them knowing something so obscure as "love is the key to this ability" seems so out of place. The ability itself just doesn't really seem to NEED that. A fear response even would honestly work better or something at least a little more tangible, maybe not even a choice at all where the ability responds on it's own. The fact that only one person can benefit from the ability SHOULD be enough for them to want to get her attention, not necessary "love" but proximity and an attempt to win her affection so she will either CHOOSE to spend more time with them and help them or they will benefit by mere proximity and familiarity. I don't see how it would be possible to really gauge love especially in a life or death situation where it would matter. Harming and starving and so on would work no matter what, if I were honest. They can hold her captive and torture her and hope she developed Stockholm syndrome if they were really going to go all out. It's simply too hard a thing to keep track of, people experience things much too differently even for this to work out. It just doesn't fit for me.
And I absolutely agree that she would probably definitely be swayed by the comment. But she monologues it with such finality, as if she has some reason to believe anything the dude that kidnapped her says. "He's right." Not "He may be right.", "he's probably right.", "Is that true?". It's "Vincent is mean, but he's honest." That seems like the biggest fricken leap. He's done nothing but say hurtful things on purpose, regardless of their relevance or accuracy, so the massive jump to "He's right. Vincent is mean but he's honest." is jarring. She could at least have some doubt, no the guys don't have a genuine interest in her, but that doesn't mean he is right or honest. Her abilities are entirely foreign to her, so taking his revelation as truth and honesty just because some dudes she doesn't know are stripping in front of her doesn't seem like something she'd be doing if you've previously played a skeptical MC especially. And that she sees him as honest and not trying to throw the others under the bus to win her favour with a different, equally deceptive tactic is just a little frustrating. WHY would she trust him at all?