People around me do not have the patience to learn some hypermiling techniques so I never really had the opportunity to teach..
In your case, I would start off by eliminating all types of distraction at the wheel. Multitasking is the enemy of hypermiling, imo.
Raising overall awareness of her surroundings while driving is step numero uno.
Learning to read the instrumentation (mpg gauge) in an efficient manner, then implementing it onto the general scanning process (checking mirrors, speed, etc.)
Anticipation is key to increasing fuel economy in the learning stages. That's how I started. Looking WAY ahead for possible obstacles (red lights, cars entering parking, etc.).
Pedal feel is somewhat important too, as it is directly related to the throttle position.
Car maintenance is another important aspect.
I am sure others will chime in with other tips.
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