I think you will need to keep trying.
I've read articles that suggest having more skin-to-skin contact with baby (regardless whether she latches or not) may help.
Another suggestion is to latch baby when she is sleepy or switching from bottle to breast halfway through the bottle feeding.
You can refer to this article for more information:
http://breastfeeding.support/how-to-get-baby-back-to-breast/
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