My Roommate

I got my roommates letter a few weeks ago and reached out to the two I could find on Facebook. One answered back right away and we had a good conversation, once we started talking about the other roommate I found out that the roommate I was talking her her brother was dating the other roommate. The roommate I had been talking to later decided to switch rooms due to the situation. I haven’t gotten any response from my other roommate yet and it has been over 3 weeks since I sent her a message on Facebook and she has been posting stuff everyday on her Facebook since. What should I do about this? Should I message her again, I am wanting to figure stuff out that way we have everything we need.

It sounds like the other roommate found another place to stay (maybe with the brother?). You need to send them an ultimatum if she does not contribute to the rent when it is due. If she doesn’t respond to that ask the administrator at your Apartment/house/whatever and ask them to take her off the rent agreement an get new roommates.