She wasn't sure what was funnier; the fact that he was still trying to be so very Arthur about it, that all she could think of was Titanic jokes, or that they were going to die.
She could likely throw the last one out as a contender.
"Arthur, we have to do something! Isn't there a door or a tunnel or any way out of here?" She was looking into his eyes frantically, trying so hard to not tell him that she'd never let go, because really, it just wasn't the time.