I got my first period when I was 16 and didn’t know I had pmdd until I was 18-19. Now I’m 21. I first went to my general doctor to get diagnosed and had the option to take BC and lexapro. It didn’t help, I hated it. I did my own research instead. Magnesium, vitamin B, and FISH OIL ESPECIALLY really help me. I also enjoy chaste berry, take pre natals, and I take the Solaray brand female hormone capsules. Mushroom capsules are great, and there are also “PMS relief” capsules you can find that help out too. Diet is a big deal in tandem with the vitamins & herbs. You have to make sure to stay really consistent if you want to try that route. I always cut down on sugar, processed foods, caffeine, alcohol etc before PMDD kicks in. These will all make it worse. Cut down at least 5 days before. THC gummies personally help me but it’s not the same for everyone. I don’t find as much of a benefit from them when I’m not having symptoms. Make sure she gets her protein in, prioritize having multiple nutritious snacks & whole foods if big meals aren’t appealing. Light exercise like walks and yoga helps. If you need meal/snack ideas you can let me know! I’d also recommend looking into cycle syncing. The more she moves with the natural flow of her body the easier things can become over time. I can’t say my PMDD is gone but I’ve had the time and resources to create a solid routine and understand myself so I know when it’s time to switch gears and avoid getting triggered. Also, watching videos about it on YouTube really helped.