nullitas' father's family inherit white hair, so her children got it too
im sorry i got confused for a bit there
I think she dyed it because her original hair is brown
In her fathers family white hair = successor. Her mother dyed her hair brown because she didn't want the father to know an iligitimate daughter was the next head... cause he would kill her. The son has red /pale hair, so the father thought it skipped a generaton.
The maid was forced to dye her hair because it was grayish.. and she would be mistaken for a member of the family if undyed, this would insult the family legasy.
Is her hair white because of stress? or is she another illegitimate daughter like Nullitas?