You can also just not swing as hard. Like if your normal full swing is 90% effort, you can take a little off by swinging 80% or 75%.
When I do hit less than full swings (not like partial wedge shots), I like to make a full backswing because my sequencing is better from the top, then I just don't swing as hard and finish short of my normal finish position (or even with a different look).
A small aspect is not zero. You can't just dismiss the mental aspect completely, especially when it comes down to being able to execute at one's highest level under pressure.
As @tessallated wrote:
It clearly had an adverse effect on her. Maybe it cost 0.5 strokes which is a very small percentage of 80, but for someone trying to break a benchmark, it's just enough to be a factor.