Have you tried the "Ferber (sp?) method"? What you might have to do is put her downstairs or in the living room or something.... away from you two. She knows that you are there... that is why she is doing it. You basically console them (5 mins or so), and let them cry. Both of my kids were difficult at times. You basically have to shut the monitor off and let them cry themselves back to sleep. It may take a few nights, but it should work. Don't pick them up. That is the worst thing you can do. Just leave them in the crib. My daughter is also 11 months and she sleeps through the night.