It seems to me that it would have been Loretta who arranged the meeting, not Bill. She probably got some info. as to what the FBI has learned that she thought Hillary should know about.
Something along those lines is distinctly possible.But I think that despite how it might seem BillyBob and The Former Twelfth Lady hold the real power here and that,therefore,it was probably them that demanded the meeting.But regardless of who called the meeting anyone who believes the "grandchildren" story had better rethink their position on the Easter Bunny.