How do I talk with my partner when she faces emotional difficulties during her period?

She just told me she cried in the toilet and that she feels emotional and that maybe her period is coming. I just responded with "I am here if you wanna talk about what's troubling you" and "is there anything specific that's making you upset?" What should I say to her or anyone when they face troubles I can't fix
How do I talk with my partner when she faces emotional difficulties during her period?
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