Hi M.,
I would say to have her nurse as much as possible, and pump every couple hours, when she's not eating. but do it at least an hour or so before she is expected to nurse. Only do this until she is getting as much as she needs from you - a couple days to a week?
If she is having trouble latching and not nursing well, change the nipple on her bottle. If she is not using a NUK nipple on her bottle, she will become easily confused between the 2 different nipple shapes, and not latch onto you.
http://www.nuk.de/produkte/mahlzeit/bottles_beakers_and_c...
go to this site, it will show you what the nipples look like. If you are not using one shaped like this on your baby's bottles, she will get confused. Get one, it will help alot, if she is having problems latching.
If its just the amount she is getting from you, again, nurse as much as possible to build up your milk. And don't forget to drink alot of liquids yourself, that will also help.
If you are giving her water bottles, stop. this will fill her up so she wont be so hungry for your milk, and don't offer the bottle, unless its for a regular feeding - if someone else is feeding her, or if she is not nursing enough on you and is still hungry.
Average nursing time on each breast is about 15-20 minutes. If she gets out most of the milk (which is usual) within 5-7 minutes, she may get frustrated that its not coming as fast as it was at first, switch breasts, let her nurse for 15 minutes, then offer the first breast again.
If she gets hungry again before 3 hours, do not give her a bottle, offer the breast again.
If you are having problems with "let down", drink a beer about 30 before scheduled nursing. This will also help with production and her getting enough. (The 30 minutes is for it to mostly wear off your system before she gets it, if your worried about it, try 1/2 a beer.)The beer also helps you relax and nursing should be less stressful for you both.
Good luck