Melina wore a dark turquoise dress which had various shapes on it. She had her hair tied in two loose ponytails with light pink bands. Underneath her dress she wore a dark purple top and tights of the same color. She wore soft boots on her feet.
She is the deceased daughter of Oswald Whistler and the friend of Janice Quatlane. She loved playing the piano. Before the events of Professor Layton and the Eternal Diva, Melina died of an aggravation that appeared while she was fighting a disease at the young age of 22. Both Janice and Oswald were devastated by her death, and Oswald went as far as building the Detragan to store Melina's memories in the hope of resurrecting her.
Janice was one of the first people to have Melina's memories pumped into her brain. Initially, the process failed like it did with everyone else. However, when Oswald turned his back to the machine, Janice buried her personality voluntarily so that Melina could act in her place. It later turns out she was the one that wrote the letter to Professor Layton.
Nina was another candidate to house Melina's memories, though she resisted and the process failed.
Eventually, it is revealed that the contest for eternal life was just a scheme to lure more candidates to house Melina's memories (due Oswald not knowing the transfer to Janice succeeded). Amelia Ruth was supposed to be the next "winner", and, in desperation, Luke was going to be next.
In the end, Melina left Janice's body, because she knew it was wrong to use someone else's body so she could live her own life. Even though Janice was reluctant, she let Melina go, and Melina left.