All of the above... she just wants your comfort & cuddles, and it will get better with time.

My DS2 was Bf until 14 months, he was the same - feed to sleep, refused a dummy or bottle, didn't want anything but breast. We co-slept most of that time, after 14 months I had had enough of broken sleep & succumbed to advice from the MCHN to wean & used a CC routine to get him sleeping on his own.

I hated it, it didn't work (well he did wean but it was months still before he slept through) and now I so regret not having just given him time, which was clearly what he needed - given that nothing we did worked, but he settled in his own bed, in his own time.
Had I known then what I know now ... I would have just left it alone & let it sort itself out.

That's just me & my experience, and I wish you the best with whatever you decide to do I know how frustrating it can be.