Aw, Tanya, that must feel rough! You are not starving your little girl. She knows how to get milk and you offer it to her all the time. Please don't beat yourself up!
Babies do find it heaps easier to feed from a bottle. (Though there are those like mine who refuse to do so! Opposite problem - particularly if you want to go out for a while!) She probably just guzzled the bottles because it was dead easy to do so, not necessarily because she was starving hungry, KWIM?
Having said that, it could be an easy way to get more into her, and if you are worried about your supply and she won't accept the breast more often, you could express half an hour after each feed which will give you the EBM top-ups and will also encourage your supply to increase. A warning though: once you start introducing bottles there is a very real possibility that she may no longer want the breast because it is easier to get her milk from a bottle. This may not happen, but it just might, and that would be a real shame.
Like MR & Barb said, probably if you want to increase the feeds, offering the breast more often is going to be your best bet - the most positive way to get more into her without the possibility of her doing away with feeding from the breast.
Maybe you could introduce a new feed where you have a warm, relaxing bath together and try her on the breast then? And/or in a quiet, darkened room when she is sleepy.