Speakout sounds wonderful, do go along if you can. I was a little apprehensive about what to expect as it's the first circle I've been to with this group (the one i used to go to find her as the leader moved away). Everyone was so friendly and welcoming, no judgement, just kindness, support, understanding and a desire just to be with other women.
The group leader should tell you what to bring with you, but usually it's something to sit on, like a yoga mat or a rug, a cushion, bottle of water, a journal and pen. Often you're invited to being an offering for the fire, so maybe flowers, petals, leaves, etc, and some light snacks for afterwards.
Do you know if you'll be served Cacao? If so, you should avoid caffeine before the event and drink plenty of water. Cacao is fabulous, it's a gentle, heart opening plant so makes you feel very relaxed and full of joy.
We also used sunflower essence, which is brilliant for building confidence and self esteem, I bought a bottle so I can continue to work with the energy at home.
Do let me know how you get on 😊