I would have to agree with Webmegg.

Dont listen to anyone else. Your baby is going through a phase and will eventually get out if it again. At least you know that she can do it and this is only temporary.

I had a no sleeper from birth. i went to tresillian and to a sleep school in canberra and no one could really tell me why he would only sleep for 40 minutes at a time, day and night. The only way that i could get him to settle was to feed him. It got to the point where he was having almost 19feeds in 24 hours.It was horrible. in between feeds he would scream.Day and night just ran into each other.
Everyone kept telling me. Dont worry it takes them about 3 weeks at home and they settle. then it was 3 months then it was 4 months then it was 6 months. Then it was when he starts crawling, when he starts walking and so on. Even though he is much better now he still wont sleep a full night and wakes probably every 3-4 hours in the night. So dont listen to them. Its YOUR baby and she will settle when she is ready.
I know its frustrating believe me and the worst thing that anyone can do is to tell you how good their baby is or to say 'dont worry, she will grow out of it'
It is a phase and just keep telling yourself that you wont be doing this for much longer. She will be sleeping through again in no time!!