Hi SJ,
when I read your post my heart went out to you, I so clearly remember the trauma I went through with my DD in a similar way between the ages of 6 and 10 months.

You have some really good advice from some of the ladies here, perhaps trying something completely different may work for your DD, she could be one of those 'exceptions to the rules' IYKWIM!!

I don't have any practical advice from my experience really, what worked for me was sleep school, however I think from what I read of your post, my experience was just different enough to not really work for you... however, I did notice this thread and thought of you. Maybe some of these ideas might do the trick??

All the best, I really really hope you find a solution soon. It is a really challenging time to have trouble with sleep at 11 months... I remember only to well.