I think sometimes parents don't realise they've been abusive, or hurtful.
If your daughter means emotional/verbal abuse, then I can see how you might not be able to see that. My mum thinks she's the best mum in the world, yet the only thing she's done to help me with my mh problems is shout at me for it and say 'it's just a phase, get over it, stop lying'.
Maybe just try and listen to your daughter and ask her how she thinks you've abused her.
The only other thing I can say is that even though you might think you've done well by her, your daughter might not see that; sometimes what you think is best, and what others think is best is completely different. Maybe just listen, and see what happens?
Good luck