Could be a few things.

It seems that a lot of babies go through a 'tricky' sleeping stage at around 10-12 months. I know our DS did! Things had settled alot by the time he was 13-14 months.

She could be teething.

There could be a food/additive that is unsettling her.

She might like a dreamfeed again, maybe when you go to bed? If you're happy to give it to her that is.

You could always try her in her toddler bed at night, and see if she's more settled there. But if not, I'd just put her straight back in with you, because if you think it's tiring when they toss and turn in your bed, it's a whole lot more exhausting actually getting up to them during the night!

Sorry I don't have any solutions. But know that you're not alone! Our DS tosses and turns most nights (we co sleep for about half the night) and it drives my DH nuts! I'm a heavy sleeper, so it doesn't really bother me. I hope you can find some way of feeling more rested soon