[after a moment, with another small smile, but more genuine] We'll be careful. Don't worry -- I'll take care of it.
[at the end of the day, it's a scientific question, and he'll deal with it like a scientist. he'll study her behavior in a safe and controlled environment (the house, using Suzaku, who she can't possibly kill if she loses control) and then gradually alter the variables as he gets more familiar with her comfort zone]