Spirit should be 4.6 m/s
There is no justification for her being 4.4 m/s. Maybe it made sense in 2018, but Spirit's being 4.4 has no place in 2022 standards. She's not a ranged killer and her power takes centuries to recover (15 seconds).
Nurse is 3.8, but she has 1 blink every 3 seconds. Blight power takes 10 seconds to recover, but he's 4.6. The last released killers were all 4.6, even the ranged ones like Artist and Nemesis.
Again, Spirit should be 4.6 too or her power recovery speed should be way quicker.