I was thinking her sister might take Lloyd's jab at her earlier in the chapter (about not stepping in to protect her sister if she thought the contract with Athena was a bad idea) to heart, and try to give Tina some recognition. Or maybe what you suggested happens first, and only then does Selena realize.Also, those last few pages aren't looking good, I forsee another "god"(demon) approaching Tina and giving her Bad Power or something to help her with her lack of confidence.
Spoken like a true loser."He's cheating!"
Spoken like someone without a clue."Maybe he cheated!"