Angelina
I don't think so.it would be better for her if she can act to have this right(for example,not asking to have it off during the day).With dices,no matter what she does,she can't have an impact on the result.
HHelen Why should it be unfair?
Look at my answer to Angelina.
HHelen Basically you mean number of dices.
Hum..0.
For example you can decide "this month she woudl have 10 nights with it on",and picking up these nights randomly.But,anyway,she would have it on 10 nights,not more,not less.
Angelina
It would be interesting to know,yes.
And how many nights she has it on or off,at average.