D.W.
How old is she?
You might be able to skip bottles all together. Try sippy cup with the spout out and a tiny amount of your milk. That way they begin to understand what the cup is for and then you can replace the spout. Or you can try cup feeding. My son was a preemie and I was trying desperately to get him off the hospital bottles and on to me but he had meds to take so I would mix them with my milk and using a tiny cup hold it to his mouth and gives him little sips at a time. This was when he was less than 3 months old so it can be done.
The other possibility of heard talk of is that some moms' milk gets a soapy (I think) flavor in a very short amount of time after being expressed from the breast and baby will reject it.
You could try Playtex nursers with the latex (brown)nipple. They were a life-saver when I was trying the transition from hospital bottle to me. They are very, very soft like the breast and with the drop in you can squirt a tiny bit of milk in baby's mouth so they know why a different nipple is there.