Keep it simple. No that's not the couple who run the laundry. There are many Asian families in our neighborhood, and they have many different jobs. You don't do this in front of the Asian couple, of course. But your child did.
Children tell the truth and nothing but the truth.
And they frequently are right. Barbara did throw away the flan. We encourage them to always tell the truth, but when we don't like a particular truth, we switch gears. It was too dirty. Mom who also thought the bathroom could use a good scrubbing, filed and polished her very embarrassed client's nails just as fast as she could.