Well planning to rule the world just wouldn't sit with her. She suspected if they were right, he wouldn't let people in on it. There was no chance of a place for her and besides once Ares got here she'd just betray him for the god that had done so much for her. The god that cared for her above all others, no matter what Hercules said. Ares truly did want to see her reach the heights she knew she could. And being with him, being with a god. It truly was amazing. So no, she didn't want this Lucifer to win. They could trust her on that at the very least.
"And when he gets here, will you still consider that logic, that the enemy of your enemy is your friend. Will you hold to family bonds then?" she asked still a little unsure that he wouldn't fight his brother, because then she'd have to kill him and the fight against Lucifer would have lost someone. It wouldn't be what she wanted. Not at all.
"If you're willing to play nice then we can have a deal. And you're right. We need to know what each other can do. Which above all means that you and I need to spar, doesn't it. And wouldn't you love to see what your brother made me. What Rome made me. I'm the best in the whole Empire and I've brought such tributes to Ceaser you wouldn't believe. I'm not sure this is the best place for a fight, unless of course you're willing to get a little messy." she told him with that same arrogant smirk that in many ways though she didn't know it was so reminicent of the spirit she had been born of a reincarnation as. Or her mother in the old days.
"Will you fight me Hercules? Just to...grasp each others skills, like you said?"