Ah, Mami understands this fear too. She knows the two are in a desperate situation and need their help, but didn't they just tell her in no uncertain terms that they don't want her fighting? She's not their puppet, she'll do what she wants. And in this case, this means...

"It will be mine," Mami promises him quietly. "I have people to return to as well. I've done research to find answers to difficult things before. If we can have access to information like theirs, then maybe we can? If we just go to their base..."

She's not thrilled about the idea, but she'll do it. For his sake as much as her own.