I think the identification of Johanna Ah’Nee as a conspirator makes sense. IIRC, Zullo said that the person who made the forgery was/had to be a friend of Obama and Johanna is alleged to be a childhood friend of the same. Additionally, she purveyed some “authentic” birth certificates which also proved to be fakes. Based on my limited knowledge of the alleged conspirators, I think that this characterization seems plausible.
Zullo also said he interviewed her and doesn’t consider her a suspect.