What does it take to understand girls' period month?

TheSpectre
Actually asking for helping my girl bestie.

Briefly, we been friends for 2 and half years and now, she asking ME to come over to her house and she's in pain, because her fiancee is away and finally the problem is, i dont know anything about your girls' period thing!

May someone give me some tips?
Updates
13 d
Update: All she asked was my company and i did time to time check your comments and did the same things. She says she survived another night with mild to soft cramps with my help. Emergency got taken care of. Thanks y'all!
What does it take to understand girls' period month?
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