You might want to try the Nanny 911 method. Putting her down, walking out of the room, let her cry 10 mintues, then go back in. Repeat the routine but let her cry for 20 mintues. If need be, repeat again, doubling the minutes each time. Many times it only takes parents a night or two of this to get the little ones to sleep.
But every child is different. Have you talked to your Ped?
