Last night I watched the pilot of Star Trek discovery and having only seen the first episode something caught my attention that one might have to consider.
over the summer I found in the friends of the library dollar bin the novelization of Star Trek 6 the undiscovered country.and I found watching the show that Lt. Commander Michael Burnham has a similar origin to Lt. Valeris.
now this might be an unfortunate coincidence on the writers part.
However if not then her actions starting the Federation/Klingon war could explain why Spock has never spoken about his adopted sister and makes Valaris's traitorous actions against the peace conference all the more painful