Arcee's only marginally surprised. She knows that humans with extra powers, like Cybertronian outliers, are uncommon but hardly unheard of. Matilda is obviously one of those. The idea of Airachnid being swatted around like -- well, like a giant insect is a strangely gratifying thought, though, and she actually has to keep from laughing, though her avatar still smiles in restrained amusement.

"It's a good thing you got away," she tells Matilda, her face shifting back into a more serious expression. She hesitates a moment, debating whether or not she should tell the little human any more. "Would you come inside with me? I'd like to talk to you more about this, but..." She gestures at the people all around them. "It's a little public."