I have a friend from high school, a very close one, who had most of that with EVERY period until just about 5 yrs ago. She finally got a doctor to listen and see how bad it was. They did an immediate hysterectomy and she has never been so happy to have surgery in her life.
She used to sit there and try not to breathe because every single movement hurt so bad. We talked her out of suicide many times (her parents didn't realize how bad it could get and they had a lot of problems with her gfgbro and her mom's health so she didn't tell them the full extent of things at the time.) and would get her a job at places we worked so we could cover for her as needed. Otherwise she lost several jobs because it was just so awful.
There SHOULD be doctor visits, GYN and reg doctor, and in that much pain? A trip to the ER.
It could be many things, but some women are just cursed and have awful periods. NOW medicine can help ease the pain, or figure out why it is so bad.
I really hope this won't be an ongoing thing and that she gets medical attention and help (it was over 25yrs ago that we helped my friend, so medicine HAS advanced and should be able to help).
Hugs to her, and to you for being so sweet to worry about her!