As I said earlier in this thread. Buck got that sneak in him to be a G. I don't buy that Alen randomly picked gangsters.
Not giving Janna a specific role was to good to miss from Alen's side. I don't think she got the jailer or detective role so my feeling says Alen gave her the gangster-role.
As far as the Sab PM, I must admit I was joking at first, but when Sab mentioned it once again some minutes ago I had to build on that lie

TBH I didn't know if she was playing the game or not.