Stick with it! While I didn't join a colony, I just rushed this fall as a junior and I was feeling the same thing at first. It seemed like a lot of the other girls knew each other, or lived in the same dorms on campus, and I felt like the odd girl out. It wasn't until our retreat that I felt included. Living off campus, and being an older student, it's a little bit harder to spend time with the other girls, but when you're in cabins in the woods, there are a lot less distractions. I found out that a lot of other girls were feeling the same way I was. By the end of the weekend, I went from knowing 4 or 5 girls' names, to knowing my entire pledge class and a lot of the girls above us (and there's over 100 of us!). Try talking to your advisors (or maybe take it upon yourself) to organize a retreat or lock-in kind of thing where you all can get to know everyone better. You can all share embarrassing stories or interesting facts about yourselves, and other stuff that will help you bond.
I really think it'll get better for you, but feel free to PM me if you need to talk about it, our stories are somewhat similar
