So is it right that you narrow the applicability of 185 to just actions your character performs (and by implication just thoughts your character has, and speech-acts they make)? Producing a subtle distinction between forcing your character deeper underwater using strength, and forcing them to propel themselves deeper underwater using charisma. The cases are not differentiated on outcome, or even necessarily on method of resolution.
This seems to be about volition, but if that is right why need that intrude on resolution? A character can enjoy volition without controlling resolution. We simply avoid overriding their volition when we apply the outcome, just as I described.
You pit your strength against the mermaid's strength. You pit your will against her will. The former we let force because volition plays no part, the latter we narrate but do not let force because we do not override volition.