ET Exclusive: Lindsay's Secret Sister, The Letters!

Yesterday, we brought you an exclusive interview with Ashley Kaufmann , whose mother claims she is actress Lindsay Lohan' s secret half-sister. Tonight, Ashley reveals the letters signed "Love, Daddy," and the broken promises the man she claims is their dad, Michael Lohan, made to her as she was growing up! "He's always hurt me," she says through tears. "It's been throughout my life." Ashley's mother, Kristi, says that the 13-year-old is the offspring of a three- to four-week affair she had with Michael in 1994.  (link)