Monica realized she probably should have warned Niki that there were other Petrelli's in the hotel - she could always make it up to her cousin later. At least the two women weren't going to get into some sort of fight, that would not end well at all.
She couldn't help but smile at Monty. In a way he reminded her of her brother, Damon. When Damon was younger and not as selfish, and well annoying as he currently was - wherever that was.
Still, she continued to stand their silently and let the other women talk.