Donna Hayward
From Wikipedia, the free encyclopedia
Donna Hayward is a character from the television series Twin Peaks, created by David Lynch and Mark Frost.
Donna (played by Lara Flynn Boyle in the series and by Moira Kelly in the prequel film Twin Peaks: Fire Walk with Me) was the best friend of Laura Palmer, and after her death she was obsessed with finding out who killed her and why, with the help of James Hurley, Laura's secret boyfriend and Donna's new love interest, and Madeleine Ferguson, the look-a-like cousin of Laura.
Donna's father is the town doctor, known simply as Doc Hayward, and her mother is Eileen Hayward, who sits in a wheelchair and tends to the house. Donna has two sisters, Harriet and Gersten, who are seen in the series only a couple of times.
At the end of season two, it is strongly suggested that Doc Hayward might not be Donna's biological father after all, and that she is in fact the daughter of Benjamin Horne and half-sister to Audrey Horne. However, due to the series' cancellation, this theory has not been elaborated upon. In the penultimate episode, Doc Hayward attacks Benjamin and although it seems that Ben has been killed, Doc Hayward shows up at the end of the episode relatively back to his normal temperament.

