So my experience of this became rather interesting near the end
If you attack while transforming, you enter a limbo state where you have the state of the small form, but the control of the magical girl form
this also means you cannot die unless you transform twice to back to the default state
funnily enough it also has the hitbox of the small state allowing you to walk the narrow paths
likewise if you attack after transforming you can do things like jump which I assume is a bug as it only works after attacking
All that aside though, interesting game!