belle - it's so good to hear from you and that you're doing alright. Even better that you haven't had a panic attack since NYE!!
With the breastfeeding and bottlefeeding, is this something that's just happening today or has it been happening frequently? The reason I ask is that Nina did something similar yesterday, kept refusing the breast, so I gave her one bottle which satisfied her, and she's all breast again today. Also if you're upset/tense or AF has arrived, they do act funny if they're breastfed.
It is hard when you're feeling down and you don't have the support of your friends. Unfortunately a lot of people don't know what to do or how to act when someone they know is depressed, so they exclude them. Have you met anyone from your mothers group that you could get to know more?
Again, great to hear you're doing well and hope 2007 is a better year for you.

ETA: Just looked at your pics and Julia is just gorgeous!!