Casey, When we moved back here (home), I went to several organized playgroups. One of them was Mothers & More, primarily for women who have temporarily left their careers to stay at home. I certainly think groups are very different based on where you live and well, the alignment of the stars, who joins when you do. My experience was not a pleasant one. Talk about competitive! Only the competition had nothing to do with their kids but everything to do with their prior career. It gave me a migraine!
I do not really love participating in large groups but felt most comfortable in an attachment parenting group. The parenting philosophy of the members was similarly part of a "journey" rather than a race/event/action of being. And noone bashed anyone else for co-sleeping, feeding on demand or doting on their baby's needs every moment of every day.
Interestingly, I have found the opposite of some other posters in that some of the most open, loving and supportive moms I have met are first timers rather than those who have "done this before."
Hannah is thriving and happy; that is a testament to your parenting. I look at my babe, who was so tiny, in the NICU, with so many monitors and feeding tube. He is a miracle, and rushing them to do anything seems so silly to me.