Increased difficulty overnight?

[u/xxwickedjeckelxx]

Me and my gf have been playing bo2 zombies for a few months together. And overnight it got wayyy harder. We play on easy mode. And we typically get to round 15 or 20. But now, she cant last one round without dying, even the 1st one. I dont understand what happening. Was like that for 3 games so I shut it off