Can you please tell what's this?

Hi guys;

Yesterday i was talking to my girlfriend, then at a point she told me sorry babe can't talk.. after a while she came back and explained.. 1st she was trembling and she couldn't move.. 2nd she became so angry and wanted to cry.. 3rd calmed down and started getting back to normal.. she told me that she had this feeling since the morning and it got bigger and bigger by time till she couldn't fight at night..

What's this guys? signs of depression? or what exactly?

Thank You
Can you please tell what's this?
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