Hi M. A,
I feel compelled to respond to your post - babies cry when they need something (comfort, help falling asleep, soothing, etc.), they are not manipulative. Even negative behaviour gets attention. When a baby's need is not being met, she will let you know with crying - when that is ignored, she must try something else to get your attention, ie. puking. I have a 13 month old daughter and she usually takes a few tries to get down, however I never let her cry as it causes insecurity and who really knows the long term effects on her well being and self confidence. But if you put yourself in her shoes and think of yourself trying to let your carer know that you are in pain, sad, needing comfort, hungry, whatever and you cried out and no one came to you, how would you feel? Probablly sad, frustrated and hurt. It is a basic human need that babies have to be held, cuddled and kept close to mum.
Babies can take up to 3-4 years to regulate sleep patterns. Many people have unfair expectations on babies sleeping (should be sleeping through the night by 6 months), this is completely false. Babies can certainly be "trained" to sleep the way parents want them to, however is this a healthy way? Sure the parents can rest well, but what has the suffering caused to that baby? Remember she is constantly learning about the world around her and how you respond to her needs is what will make her secure.
Teething is a huge issue and disrupts sleeping patterns, they seem to go through waves of irritable nights.
I know how hard it can be when dealing with getting a child to sleep, however I constantly remind myself where she is at developmentally and that I am her lifeline and the one person she trusts the most to fulfill her needs.
Here is an article from the Australian Association for Infant Mental Health and it's recommendations. I know you are in the states but babies are the same all over the world! http://www.aaimhi.org/documents/position%20papers/control...
You are a good Mum and you are doing a fantastic job, remember that presence and parience are the most important (and can be the most difficult) parts of parenting.
Another useful site is http://www.naturalparentingtips.com/
I wish you all the best.
J.
Doula, Breastfeeding Counsellor & Student Midwife