hi A.-
I am sorry you are having this problem, I did also with my 1st. and 4th. child, the problem was I was not breastfeeding her enough every 2-4 hours as a newborn then every 4 hours until she was almost 6 months old. but as you, i did the same thing i put them on the bottle and they would not take it did't matter what kind of bottle i put them on , it did'nt work!!!! until finally i found out!!! she was confused extremely confused, you see you can't change nipples on a baby too fast ( it's like try to learn how to ride a different bike day at the age of 5) you need to put her on a playtex natural mothers breast kind of nipple and keep her on it even if she won't take it the first couple of days , when she gets hungry enough!!!believe me she will latch on and will not take any other kind of nipple!!!!
just keep her on the same one so she can get used to it.
It's going to be tough on you!!!! and every one around, but sit down and hold her!!! don't be nervous,she will sense it ,,, try try to be very calm , lay back close your eyes and theink of something very calming to YOU so she will sense your calming effect rock her , let her know she is safe secure and she will calm down enough to take on that different nipple, keep doing it , might take a few days but once she gets used to it you will be so relieved!!!!!!!!! gently move the bottle around, that nipple has to feel comfortable in her mouth and only YOU can do it ,,, but you can just keep it up wiggle the nipple around in her mouth very slowly untilshe gets that sucking inclination or instinct!!!
hope this helps
mother of 5 all grown with 9 grandchildren
S. R