To not know how to get DD to sleep?!

[HopLittleFroggiesHopSkipJump]

I'm out of ideas. How do you all manage?!

She's 12 m/o and usually breastfeeds to sleep (albeit for about 30 minutes minimum.. But it works at least).
Tonight, 45 minutes in, she doesn't want to feed, or cuddle, or be in the bedroom (co-sleeps) or read books, or do anything remotely calm. She wants to climb, charge about, and wave her toy dog at me shrieking and giggling like she's got a megaphone.
Help!!

Does she have her own room she could move into? I noticed DC started sleeping far better when they weren't being disturbed by us going to bed, also a few friends said the same thing. I too find lullabies a useful tool as DC seems to concentrate on the music rather than getting wound up. The other thing we do is what the French refer to as the pause. We give DC the opportunity to settle themselves. If DC cries, we give them say 5 minutes, if they cannot settle, or sound distressed at the end of this time we intervene, 9 times out of 10 it works. Good luck.

Btw it is hard moving your baby into another room, I cried! BUT this guilt doesn't last very long, especially when they sleep so much better.

Have you read The No Cry Sleep Solution?
Geared towards co-sleeping parents it's great.