Well, there are some babies that may never take the bottle.... My son was one of them. Not what you wanted to hear I know... The good news is... that you can use a sippy cup or a straw up instead... you can drink from the sippy to show her and she can mimic you too... you can put some juice in there a little at a time and let her play until she knows theres good stuff in there :)

mixing the breastmilk and formula works as well in getting the transition to go easier  so that's a good idea... you ca keep trying with a bottle and see what she does but some breastfed babies just don't ever want a bottle.... its better for her to go to a sippy or straw anyway for developmental reasons.  wean a little from the breast at a time so that you don't shock her too much and she associate a bottle with not getting mommy.. we want it to be easy for her :)