I have been having the same problem with my 9 month old. At five months she just stopped sleeping the night. Doc said that she is just an active child that does not want to miss anything. THAT did NOT help me at all. We tried "cry it out," from Ferber, to teach her how to fall asleep in her crib. All it taught her was to be afraid of her crib. We did "pick up, put down" from the Baby Whisperer. It worked for a while but my husband and I just did not have the energy to continue it. It IS a great book and it will help you with this new little one. But she still was not sleeping, she was not even napping.
The Problem: not enough sleep is sleep deprived. With a full house, your daughter might not be getting enough naps during the day. So, when she wakes up crying, she is actually just asking "Mommy, please help me get back to sleep, I am so tired!" The fact that she falls asleep when she has a bottle does not mean that she is hungry, (I have the exact problem but I breastfeed), the act of sucking the bottle is a rhythmic motion that gives her a focus that allows her to fall asleep. Kind of like turning out the lights and lighting a candle to focus on for us.
I just purchased a book "The 90 Minute Sleep Program" http://www.pollymoore.com/ It seems to be the only sleep book on the market that is geared for the first YEAR (not just the first months) of a child's life. It is written by a neurologist who specializes in sleep!!! I am almost through with the book, and yesterday was the first day I actually followed the program. It is 7:10 and she is STILL ASLEEP. Yes, she did wake up 3x once I fed her but the other two times, I just patted her back till she fell back asleep. The website alone has good advice and will give you the basics, but this quick read book is giving me great advice.
Good luck and NAP NAP NAP.