There could be some nipple confusion happening because it actually takes them more effort to latch directly than to drink from a bottle - which is also kinda why some babies get used to a bottle and then stop latching because "there's an easier way out" for them.
Having said that, you might need to trial and error with several different kinds of bottles - and also get someone else to help you feed her with the bottle, ideally the person who would be feeding her when you're at work. Reason being, they are smart kids so seeing you around = mummy's around = milk is around = if I don't drink well from this, mummy will still feed me!
Sherman