How can I help my daughter take a bottle?

We have been strictly breastfeeding, but I want to start introducing a bottle so I can give her pumped milk while we are out and about.

She so far has refused 2 different bottles and gags on the nipple when we try to give them to her.

There is only about half and ounce in the bottle, but I don’t know how to get her to take it. She sometimes uses a pacifier but doesn’t really like that either. So I don’t know how to get her to learn to take a bottle.

Any tips??