That sneaky little touch combined with the warm hum of the toy and the anticipation she's been feeling and she finally begins to fall apart. She might normally have a very smart reply for him, but she's been on edge already. The little rub of his finger makes her jump, her hips hitching, and she tries to say something, but cannot get the words out. Instead there's a muted little gasp and her body seems to tense, hips rising against his hand as she's overwhelmed by a wave of pleasure that seems to break over her all at once.

The lips against her breast certainly help.

"N-No-" She manages, head back, eyes half-closed. She's a sight - flushed, legs spread, body slick with sweat and she's still going.