Can period (PMS) cause a girl to turn cold/start distancing herself?

Questions says it all basicly. But last week my girlfriend has had week off from job, but also her period week. Along with a mum that just had surgery. Last two days she's been seeming cold/distant and talk a lot less. Could period be causing it all? As earlier this week i got updates daily how it was going at home with her and her mum but last two days it's been a big decline and she isolates herself with games instead
Can period (PMS) cause a girl to turn cold/start distancing herself?
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