Ohhhh, those night nursings! *sigh* :)
"The No-Cry Sleep Solution" is one of THE BEST books ever for advocates of gentle parenting and attachment parenting who want to get some SLEEP! It has a lot of practical information and is pretty short and easy to read for us sleep-deprived folks with the attention-span of a goldfish LOL
Night-weaning is tricky with a child who doesn't cooperate. There are a couple of things to remember:
1.) They do quit eventually. Usually even before college LOL So, courage!
2.) Some babies do need those night nursings a bit longer than others. She might be looking for the closeness of you, the taste and smell and security of you in the night. Or she might really be hungry :)
Is she "really nursing" at night, or just topping-off, so to speak? If she's filling up, you might try to encourage her to nurse longer right before bed to try to fill her up. And offer a filling (but healthy) bedtime snack. That helped a lot with my son when I was night-weaning him around 13 or 14 months. I'd give him a banana or some whole wheat toast or something quite filling, then nurse. And, when he'd start to doze off, I'd jiggle him awake and get him to nurse a little longer.
I also started wearing his daddy's t-shirts to bed, instead of breastfeeding pjs or no shirt to make it more uncomfortable for him to nurse at night. He usually would get tired of wrestling with all that fabric after a minute or two and decide to go back to sleep.
The final step, once I'd gotten him to the "try to nurse, give it up and crash" stage, was just not nursing him at night. His bed was set up as a cosleeper beside mine, so I could reach over to lie him down and pat him and be near him without having to get up. I could doze while he fussed and wriggled, and he didn't (usually) cry or scream. If he started really wailing, I'd sit up, pick him up, put his head on my shoulder (but not let him get in the nursing position) and sway and pat him until he calmed down and I could slide him back onto his bed. He was comforted by closeness, although he's always been prone to fit-throwing over not getting his way, so a couple of nights were a little noisy.
From deciding I just could NOT deal with two or three night feeding anymore until I actually got a whole night of sleep was about 2 1/2 weeks. I just tried to lead him to night-weaning while still addressing his need for comfort and closeness at night. A few nights, he nursed, a few nights he didn't, and then, one magical night, I didn't hear him all night long!
I've now moved his bed further away from mine, and he still mostly sleeps through. Granted, I'm up right now because of him, but his tummy was upset (gas) LOL
After he'd stopped nursing at night completely, he got a horrible stomach bug. My milk was the only thing that stayed down at all, and he wanted to nurse all day and all night for about 4 or 5 days. I was afraid that he'd fall back into night feedings, but he didn't. As soon as he was all well, he went right back to sleeping all night.
Good luck!!!