Sandra Rafflethorpe is a character mentioned in the source code of the website Oceanic-air.com.
Sandra is the intended recipient of the hidden mesage, which was written by her sister, Sally Rafflethorpe. Sandra is said to reside on Palm Avenue in Lewiston, Idaho.
Because these characters only appear in the form of a hidden storyline in a peripheral website, their impact on the Lost storyline is likely to be insignificant. For more information, see Lostpedia's Canon policy article.