[Ger-Poland-Volhynia] maiden names vs previously married names question

[kitchur at mymts.net]

question - one of the records for marriage that I have for Rudolf Bohn shows his parents as (Friedrich Bohn & Regina nee Kamień/Stein) -- 
this area nee Kamien/Stein -- one would then think that she had been previously married. 
Would Kamien or Stein be her maiden name? or does it mean something else completely? 

https://imgur.com/a/0JKZz