On how the meetings go... also lots of flexibility. When I had a mixed group of women (believers and seekers), I basically did a (1) short devotional geared toward encouragement in difficult times or about family issues or prayer issues. Always trying to encourage and make them want some more... In our small group, (2) we'd just go around and ask about their children and their needs. We'd write them down (we made prayer journals together which was a great activity -- they'd never done anything like that before. I bought small notebooks, stickers, scrap booking things, and I had those small Bible verses cards and they chose and glued them on their prayer journals (since some didn't have a Bible). (3) Then we'd spend time praying. We kept the meeting to one hour but they always stayed longer. I'd often offer tea and have it available as they arrived.
Now, I also once had a larger group of women, about 20 or so. We met once/month at a church. We then did 2 songs preparing our hearts for prayer, a short devotional, and divided into small groups of 3-4 women and then shared the prayer requests and gave answers to prayers too.