Babies are all headstrong. It's the survival thing :)
You might try cosleeping for a few nights, with just accepting it, to see if it works for you. If not, then take a shirt you've worn, that smells like you, wrap it around her when you're rocking her to sleep, then, when she's limb-limp (you can lift an arm or leg a few inches and drop it without waking the baby), put her down, swaddled in a warm shirt that smells like mama. That would be how I finally transitioned my baby (now 15 months) into his toddler bed at night. It's set up like a cosleeper, so he's still close enough to touch, but far enough away that I can stretch out. Funny how it didn't bother me to be snuggled all night by him at 4 or 5 months, but by 6 or 7 it was like "GO AWAY!" :)
I've coslept with both of my babies. With the first one, I was NOT going to be one of those people. She would sleep in her own bed, period. Well, she taught me differently really quickly. I was so desperately sleep-deprived, if she would have slept hanging from my earlobe while I did the cha-cha on the ceiling, I would have found a way to do it! She just didn't require much sleep, so I was willing to do ANYTHING to get all of it that I could! So, since she'd only sleep in contact with me, I got a bedrail, checked on safe cosleeping information (Dr Sears and Dr Jay Gordon both have a lot on the internet), tucked her against my side under my arm or curled against my chest, when I was on my side, and we slept.
Everyone liked to tell me how much of a mistake I was making. She'd never sleep on her own. She'd never night-wean. She'd never sleep through the night...
Well, she slept a solid 6 hour chunk from very early on (the definition of "through the night"), she night-weaned at about 5 months, and, when she was 17 months and I set up a toddler bed in my room, she went right into it. At 2.5 years, she trotted down the hall to her very own room, no problems, no fights. For the first 3 or so months, I nursed her to sleep. Then she stopped going to sleep while nursing. She would unlatch, burp, and then just drift off while I rocked her. By about 6 months, that stopped working. I rocked and rocked and rocked and rocked, no sleep. So, in my exhaustion, I carried her back to the bed and lay down with her, her back to my chest. She was asleep in minutes. So that's how I put her down for about 2 or 3 more months. Then she started rolling over to play with my hair. So I would lay her down and leave. And she went to sleep. On her own.
When you're nursing and sleeping with your baby, your sleep patterns will match up to theirs. With my son, who first slept curled face-first into my chest in my bed at about 4 hours old, I used to wake a moment before he did, so I was ready to nurse him the instant he woke up. If the baby can turn her head (not even have to pick it up), the baby can move far enough away from you to keep from suffocating. That's how we've survived for so long :)
Like I said, with my son, my tolerance was a bit shorter on cosleeping. Every mother-baby dyad has different needs. The key is being certain that BOTH the MOTHER and the BABY are getting all their needs met. After needs come wants. After wants comes a hot supper and a long soak in a bubble bath LOL
Hang in there. She won't be a baby forever, and then you'll wonder where the time went. :)