Black Facebook profile picture meaning?

thedude1994
Ok there is this girl (we are both 18) I talk to on Facebook and in class from time to time and I like her a bit. So, a week ago I thought she was mad at me about something but when I asked on chat her she said she had some problems. So on Monday she changed her profile picture to a black square (completely black). Then she wasn't on FB the whole week.
And today her FB profile pic is still black. So today I was curious and saw that her twin sister's profile picture was also black and I'm sure it wasn't black before. And it's not like they are insecure or anything. They both played in a movie .So does the black Facebook picture mean that somebody died in their family? If not what does black Facebook profile picture mean?
Black Facebook profile picture meaning?
10 Opinion