Delphine White

is Stephen Reyes' girlfriend (as of January 2009). She "was in New York, hanging a show" when Reyes was kidnapped and tortured by Hope Mitchell in season 2x06 "Cuckoo." 

In the DVD extra "Daffodils", Delphine was waiting for Reyes when he first woke up in the hospital, along with "an enormous bouquet of yellow daffodils stuffed into a green glass vase, their cheeks pressed together so tightly the petals of their collars bent."