Possible Clues:

• Dainty laugh
• Get ready to drive him, perhaps. What a giggle!
• Giggling sounds
• A giggle or titter
• What a giggle to be driving from there with a man, by the sound of it!
• Some amusement cummings, having grown up, instilled in you
• Get ready to drive him, perhaps - that's a giggle
• Polite little laugh
• Giggly laugh
• Prepare to drive him, perhaps. That's a giggle