Board Thread:Legitimate Canon Questions/@comment-26375697-20150514182901

From this very website I read that "The number of Noshiko's tails was limited. There were nine slots in the box where they were stored, her husband said she had sacrificed five and she broke two on screen. She then had one left which was stolen and used by Nogitsune/Stiles."

That only adds up to 8 tails. Was/is there a 9th one? Did I miss something or is that a plothole or has she not obtained her 9th tail yet? Or did she just overestimate when she made the box to hold them? 