Well, the trouble with the bottle is that sometimes it backfires you, that is, it works for a while and then it becomes a prop and not a nice one. I recommend that it should not be used as the last thing lo does before going to sleep because of it. It is a good part of a wind down, but is more likely to work for good if it is the first thing that gets done, that is bottle-book-cuddle/songs-and then bed (as an example)...
From your post i see a lot of things that are not helping with it, that is you taking her to your bed, the rocking (sometimes)... you see, she doesn't know what to expect cause each time she cries, you try something different and in her mind, it has became i game (i cry, i get rocked or maybe if i cry harder i'll go to mommy's bed)... this kids are SMARTER than us LOL.
I would like to see your daily schedule to rule out other causes for her upsetting (it might be caused because she's overtired, ill or teething) and to come up with a structured plan that includes a long wind down that helps her to go to sleep independently and to solve her night wakings without you interveining much. Im thinking that a walk in/walk out techique will work for you (all techniques are described by henrysmama in the FAQ section). But first we need to have a hint on what can be causing her to act like this.
HTH and īpost back!