Answer:
Do not call it out. Try and aid them in any way possible instead
Some of the reasons can be:
If you're a pre-teen or a teenager who has only started menstruating, you may find that it takes a while for your period to settle in and become regular.
I couldn't think of anything else, but hope this helped enough!
To find the best answer, ask your mom!
~Aurora
Perhaps, how this will benefit me? Is it safe? is it legal? are they forcing something into me that violates my rights ?