Lily didn't let any expression show on her face as her request for a different oath was turned down. Nor did she betray any thoughts as to Emile's wish. Truth be told, she had expected his wish to be something less selfish. The return of his two deceased friends, perhaps? That was a Wish she could have gotten behind, and would have supported herself. This, however, was something else entirely. It didn't just sound villainous, it [i]was[/i] villainous. That he felt the need to stress that he was [i]'Good for it,'[/i] certainly did not give her any more confidence that he was not a treasonous, back-stabbing piece of filth. Quite the contrary. 

So yes, he was completely right that Lily did not trust him. That he had not been antagonistic from the start told her only that he was not her immediate enemy, but that was far from the same as giving her a reason to trust him. It was a credit to himself that he had, at least, admitted that he had every intention to betray her the second things were no longer convenient for him. The words may not have been spoken, but she was not a Trickster for nothing. He would only ever risk losing some of his power if he broke the oath, and even then only [i]if[/i] it worked on him. And that was a very big If. 

But that still left the question of what she would do without him and his crew. Which carried the greater risk: Having people like Emile on her side, who might betray her the second allying with her was no longer convenient for them, and thus risking a betrayal at the most inopportune moments. Or turn them down for fear of said betrayal, and risk them allying with one of the other contestants? She allowed herself to blink, using the moment of darkness to decide. 

She had to take them on their word. Emile was incredibly quick, even by her standards, which would make him very difficult, if not impossible, to defeat if he turned on her. However, she knew two things that still tipped things in her favour. One among them was how the Tournament was designed, and how a Wish was attained, and the other was that Emile, however fast he may be, still moved at a snail's pace when confronted with lightning. At worst she employ her illusions and break his mind. 

A betrayal she could predict and work to prevent, or make sure to turn the tables on them instead. But if they allied with her enemies, then she was simply up against foes she did not expect to be able to win without extreme caution and effort. 

"Very well," she said slowly. "So you won't swear your aid to me, then. Consider this a request, then: Will you swear to not attempt to kill me? I should let you know that you have nothing to lose with this particular promise," she added, and began to slowly take out the phylactery from under her shirt without looking away from him, holding it up for Emile to see. "I expect you're able to see the differences between my Phylactery and the ones you carry from your deceased friends. Yours are dun, so if you kill me, the Souls I carry will be lost, and the Wish can never be granted." 

She put the phylactery back where it pressed against her heart, and held her hand over it for a moment. She allowed a wistful expression to fall over her. "I came here to bring someone dear to me back. Even if I fail, I don't want to leave my fiancée wondering why I never came home again." She squeezed her eyes shut, forcing back a tear she had not expected to appear. The very thought of not returning brought physical pain. She breathed in deeply and let it out slowly, looking back up at Emile with as steadfast a stare as she could muster, balling her hand into a fist against her chest. "I accept your proposal and your aid in the coming battles. And [i]I[/i] swear on my power, that I will ask for my wish and yours, to be granted upon my victory in the tournament, aided by you and your companions." 

She let her hand fall to her side, and waited.