I had a similar experience with a female agent who was sent to me for three days of dedicated "remedial" firearms training after several failed attempts to qualify with her G27.
Before she shot her first qualification attempt with me, I took her G27 and handed her my G26. After five rounds of familiarization fire, with a huge grin on her face, she shot a 285/300.
By the end of the first day, she was scoring in the low-to-mid 290s every time, and we spent the next two days working on tactics and weapons handling drills. This was 12-15 years ago, when I spoke with her earlier this year, she's still carrying that 3rd Gen G26.