Magnus isn't going to promise that they'll find a way, because he doesn't want to promise something so important if he can't guarantee it. "I'm just saying I know it sucks really bad," he tells her, giving her a little squeeze. "And I know I'm really, really lucky. I'm lucky to have Alex, and I'm lucky to have two great dads -- and one Jerome -- and such a great, cool, fun, smart, talented little sister. There's people I really, really miss back home, people who are like family to me, but... I know it's different than it is for you. I know it really, really sucks extra bad for you that Violet and Klaus didn't come, and the worst possible person did. And I'm sorry that it's so unfair."