A.M.
First of all, read the book, Healthy Sleep Habits, Happy Child my Dr. Marc Weissbluth (sp?) It is a wealth of information and problem solving.
My first suggestion, per the book, would be to try an earlier bedtime. Maybe 6:30. She may be overtired by 8:00. When my son was that age, he went to bed at 6:30 and sometimes even as early as 6:00. Early to bed doesn not mean early to rise. He would sleep 6:30pm to 8:00am. Now, at 19 months, he goes down at 7:30 and sleeps to 8:00.
Read the book, you'll be glad you did!