D.M.
I think she may be using you as a pacifier too. If you aren't a CIO fan (I wasn't - but it does work...) you can do other things besides feed her to comfort her. Maybe only feed her once (ease into it) and the other times, give her a pacifier (if she'll take one , my kids never did) or just hold her and sing etc to comfort her. Eventually cut out all feedings and don't pick her up, rather rub her back and sing to her in the crib etc... but don't pick her up. Then leave the room for 5 then 10 then 15 mintues etc at a time to teach her to go to sleep on her own. Hang in there - it will get better : )