Refugees? I didn't know there are/were Thai refugees.
Her family is originally from Thailand (a few generations ago), but her family lived in Cambodia since at least the 1950's or so, however they don't speak cambodian, but a dialect close to Laotian called "Nya" (no idea how to spell it - that's just how they pronounce it).
Her parents and older siblings are refugees from Cambodia, and she was actually born in Thailand somewhere while they were on the run (and still under fire from the Khmer Rouge I am told). "In the jungle" is where her parents tell her she was born - location unknown, probably Thailand. So I guess she is "genetically"/racially Thai, and she was also born there by happenstance.
I just say she is Thai without reciting her family's life history. Most folks think Laos and Cambodia are dishes served on a chinese buffet, however "Thai" is more commonly known as a nationality. Sometimes folks guess the wrong nationality though (Oh, she's Thai, does she speak Taiwanese? ).
I'm just gonna tell my kids they are Chinese. It's less confusing that way.