User blog comment:IamJakuhoRaikoben/Chapter 415: And It Shall Become Your Will To Live, Review./@comment-7716957-20150110173430/@comment-9595671-20150115014428

I'm not sure about Makarov, since the next master is decided by the current showing them Lumen Histoire he likely knew about it already, its a secret to the master after all so I think he was more surprised her ghost was the reason they didn't die from Acnologia's attack.