We know this is a longshot but....
Back in 2009 we met a Chinese couple that owned a small convenience store near the bridge. Their last name has faded from our memory.
We tried to find them this summer but were either looking in the wrong place or more likely the store has been torn down and replaced with another building.
They had a daughter with the unusual (to us anyway) name of Ping. She was very proud of how highly she was ranked in her class. She would be about high school age now. They also several older male children who would be in their 20s now.
It was a white block building with a picnic table out front. We don't remember a sign.
Does this ring any bells with anyone?

Hello ATraveler.....If it is Ping Ling (no laughing please) they have a Chinese restaurant back behind Escalante almost in DFC..... The ladies name is Ling and they call him Mr. Ling with affection....... Great family mostly boys, all listen to Mom..... If you are returning soon I can check with them, we should be back in that area next week for an event.........

Thanks so much Judyann! That sounds like them for sure. We will be back one day but I do not know when.