Hi,

Your little one sounds really pretty normal for that age. There's no failure in all of that. Babies DO wake frequently at night for at least the first 6-12 mnths. That's why so many mothers actually do co-sleep - because we need the sleep and they sleep better when they are close to their mum. Breastfeeding to sleep is normal and it's what works - that's why we do it. I really just don't get those books that recommend you put a baby to bed awake - even wake them up to put them to bed. Crazy! It really won't be like this forever. They change (thankfully) There is barely a mother alive who hasn't walked out of the room and left their little one crying. Sometimes we have just had enough.
Much of the stress comes from trying to achieve something that is basically working against nature - trying to make babies sleep alone for long periods of time.
Tell me, has she started solids yet? Do you have a family history (either side of the family) of allergies and intolerances (including asthma or eczema?) Is your little one well? Has she ever been sick? Do you have help and support at home?