How old is baby? We learnt cup feeding first about 5 days in on the recommendation of the breastfeeding team at our mlu. Hubby did both cup feeding then introduced a teat during skin to skin never had an issue. Have you got a breastfeeding support network by you?
Have someone else feed her, mine took to my partner feeding her but put up a fight with me. Also check the temperature - make sure the milk is not too cold if you had stored.
Is she due a feed when you try and have you tried the same bottle more than once. On our first attempt baby wasn’t hungry but we tried again with the same bottle at a later date. Not the typically recommended bottle type but both my breastfeed babies have taken to tommee tippee bottles.
What position are you trying when bottle feeding? I saw a really great video which showed baby side lying on dad's lap to be fed mimicking the position they would be in for BF! Not saying it's the reason my LG took to bottle straight away think we probably just got lucky but maybe its worth a try? HV also suggested to us that last feed before bed might be a good place to start with bottle introduction as they're more tired so less alert to what's going on. Also could try the trick of your partner wearing something that smells like you so baby can pick up that scent as well.
Are you the one trying to give the bottle? I found that introducing a bottle via someone else (like partner or parent) when baby isn’t super hungry helps. We use mam bottles and it did take a few gos to get my boy to take them!