User blog comment:Gourgeist/Shingeki no Kyojin Chapter 64 Review: Welcome Party/@comment-189.199.61.170-20141214070734/@comment-5995523-20150107043221

I think it could be possible that Annie ate her father in order to get the hardening ability form him.

There is a possibility Grisha came from the same town as Reiner, Berthold and Annie, I don't know.

As for Kenny betraying Rod, I wasn't at all surprised by this. Maybe he had an ulterior motive for wanting to inject himself with the serum, eat Eren. He intended to kill both Rod and Historia to in instill himself as king. Maybe he presumably believed that the Ackerman family inheriting a stronger and special ability could pose a threat to the Reiss Family someday. Maybe Kenny and Mikasa's father were involved in a failed revolt against him that lead to the Ackerman family being persecuted, I don't know. Rod only spared Kenny in exchange for his services. Either case, this may not stop Kenny from following through to eat Eren and gain his memories as the coordinate.

There is also the possibility that the Ackerman's special abilities were not only well known to Rod, but also Grisha. He may have held a special interest in Mikasa other than having her be Eren's friend.

There's also the Annie look-alike, but I think the woman may be in her early 20s. She looked a lot stronger and more adept. Maybe Kenny taught her well like Levi.