Having transient, convenient, and selective amnesia allows for a false plausible deniability and has apparently become an endearing quality to her supporters. She just claims not to remember, blames her memory loss on the 2012 concussion, insists that people accept that as an excuse, it then turns it into a false apology, and it's all GOOD. See how this works?
There has to be more to the story.
Can anyone help out filling in the tick-tock on the following time line? Where was Huma? Did Huma take medical leave? Is there a flight log as to what kind of aircraft the State Department assigned to her in this time frame? Did the State Department either damage a C-12 Huron or is there one missing from the inventory? Did she start negotiating with Iran on the nuke deal in this time frame? Will Assange have more "personal" emails in the Dec 2012-Feb 2013 time frame which may reveal more?
Regarding the "fall", there are conflicting reports. Some say it "happened at home". Which home? Was there an ambulance call? Some say the fall hapened in her 17th-floor office at the State Department. Was there an ambulance call? So which is it? At one of her homes, or in her office?
Helment given to Hillary from her staff "for the next time she flies". 
Wiklieaks pertinent email from Clinton's server.
Huma to Hillary on article about brain injury.
Mills to Hillary, article on leaving hospital.
Stafff asking Senator Frist for help with PR.
Video January 2 ref Crd Job Price death (note his death went unreported until Jan 22.
+++++++++ https://eyreinternational.wordpress.com/2013/05/11/what-really-happened-to-hilary-clinton-and-us-navy-seal-commander-job-w-price-republished-modified/
http://www.cnn.com/2012/12/27/politics/clinton-back-to-work/index.html
http://www.jerusalemreports.com/hillary-clinton-injury-from-iran-plane-crash-seal-commander-killed/
http://www.greeleygazette.com/press/?p=21848
http://defence.pk/threads/clinton-injured-us-navy-seal-killed-in-secret-us-mission-to-iran.227746/
http://www.hillarynme.com/2013/01/01/is-hillarys-blood-clog-the-result-of-severe-injuries-suffered-in-a-plane-crash/
http://www.abovetopsecret.com/forum/thread913711/pg1
http://www.cashill.com/intellect_fraud/hillary_and_her.htm
http://althouse.blogspot.com/2013/01/the-clinton-clot-plot-thickens-or-thins.html