Gone off the grid?

My ex girlfriend deactivated her Facebook last week, hours after liking and commenting on a few of my posts... I asked her about it and she confirmed she deactivated it... I posted a bunch of snaps to my story over the weekend but she never looked at them (which she still did after breaking up with me), then today I sent her a message on snap but it hasn't been opened yet... so I'm assuming she logged out? I'm just confused on why she'd go off the grid on social media right now...
Gone off the grid?
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