You didn't gave her the attention she needs. She doesn't want to admit it, but she likes the attention the MC is giving and when she tried her best to be sexy for the mc he didn't even cared. It's not nice to be in her place in that moment.
I mean, u are the dev so it's kind of a moot point to argue with u.
But at least from my view as a player, the scene plays different:
Tris and MC made a bet: she gets a car if he loses, if he wins she will clean in a maid dress for a certain amount of time.
At the first time she should clean, she don't want to hold up her end of the bet and wants to made a new bet, so she gets money from the MC (at which point i was annoyed that she doesn't stand true to the bet).
I'm not saying she doesn't enjoy the attentionfrom the MC, or that she trys to hide her feelings, but at this point she could do both, if she just hold up her end of the bet, so the new bet is cause she wants money.
The Mc clearly paid attention to her at the begin, as he comes into his room, comments on her legs etc.
In that scene it is pretty clear Tris want to win her bet and trys to tempt him, pretty obviously at that, so he look and loses. As the MC i don't want to lose the bet, that has nothing to do with not caring.
She trys her best to win and if the MC doesn't fall to her obvious tempting she is pissed cause she lost the bet and got no money, which she makes pretty clear if u don't look.
That u also close her path with that nice image, translates to me, that her feelings are tied to her getting money.
For me it isn't even about the money, if she needs some and ask she can have it, after all she is family, it's natural to help. But that scene portrait her extremly money hungry and if she doesn't get what she wanted for once her feelings are gone, that makes her look really cheap imo.
