Hi ColoS40, this is Maurizio from waaay across the Ocean.
One thing nobody has mentioned.
Detail.Even among two bikes of the same model... no two bikes are the same.
Throttle response, accellerator cable lag, clutch lag, rear brake setting...
I've listed only four issues which will be typical of my bike, vs. your bike vs. anybody else's Savage/S40.
The bike your friend used for MSF Class was not only a different model with different performance characteristics; it had different throttle response, braking response, seat height, foot peg position etc...
So... what if all goes well, she rides around the neighborhood and locks the front wheel on gravel as she proudly comes to a stop in your driveway?
Who sues whom for damages?
Are you sure you want to lose a friend? I'd rather look selfish for a few days than lose a friend forever