Try and tighten the top strut mount nut. It's possible the bushing is so compressed it's allowing a little play or it's backed off an RCH over time.
You'll need to put a wrench on the big nut and then a little on top to keep it from spinning the top, see if you can tighten it a half or a full turn.
2014 Focus SE Manual -
2006 Focus ZX4 SE Auto -commuter 110k /traded