have seen a good amount of tomboys here on the farm. for years my mom never really drove a tractor, parents split up. gave her some pointers in how to run the tractor and never looked back. i gotta keep on her ever now and then. when i see something dangerous. and make sure she realizes things. initially when she started, everything had a "black mark on it" from a good old felt tip black marker. it was around every lever, and knob, on gas cans, on what grease to use, etc... no notes on paper it was all over tractor and equipment. honestly really could care less about the black marker. she picked up what she needed to know. and i get on her ever now and then, when i see something dangerous. she hits the grease zerks, all oils, gas, and away she goes. all i do ever more is mainly do preventive maintenance, oil changes, flushing radiator, spark plugs, adding any sort of fuel additives, sharpen blades, hook up any implements that may need major redo of tractor setup, fix a flat, repair things.
any more it is nothing but the ladies out here on the farm (friends and family), show them what to do and what needs to be done, and do not look back they just go to work, to what they think would look good. or what will work. and turns out good enough many times professional looking and better than what i could do or would have done myself. as they learn, give a tip or two here and there to make it easier and /or quicker, that light bulb comes on. and away they go again.