Four years ago, getting cast on "Desperate Housewives" was a dream come true for Eva Longoria Parker, who is now paying it forward by making a wish come true for one of her young fans.

The beneficiary of Eva's kindness is 12-year-old Dominique, who was flown all the way from Switzerland to meet with her idol by Reves, an organization that makes wishes come true for seriously ill children.

ET's Steven Cojocaru joined the two ladies to find out why Eva and "Desperate Housewives" means so much to Dominique, who shared that the show was a welcome break during her six-month hospital stay and eight months of chemotherapy.

"Eva is amazing," Dominique gushes to Cojo. "['Desperate Housewives'] made me laugh and it made me happy."

The friendship between the two began when Dominique sent Eva a tape. Eva recalls, "She sent me the most beautiful DVD. She filmed herself in her home and where she is from. She showed me pictures of her life. I was so touched and blown away that she would spend all this time to put this video together. She was going to come and visit us last year, but she wasn't feeling up to it, so I sent her a tape, 'A Day on the Set with Eva.' It showed her via video showing her the entire Wisteria Lane, so she felt like she was here."

These days Dominique says she is feeling "very well," but is very excited to get her very own real-life tour of Wisteria Lane.

"To hear the effect that it had on you just touches me in such a way. I can't explain," Cojo tells Eva -- and then they take Dominique on the tour of a lifetime.

"This is what it is all about," Eva says. "Using your fame and your platform for greater causes than yourself."