When I was six years old I got one of these for Christmas (exact model) plus with some tapes to play.
No one showed me how to use it yet i did. I assume most kids would work it out also. This has 8 buttons While the anslutz rifle has just three (Trigger, Chamber and Safety switch)
Sony Walkman = Load batteries > load cassette tape > Insert headphones > work out 8 buttons
Anslutz rifle = Load bullets > Insert magazine > work out 3 buttons
Walkman is not only harder to get going its a far more sophisticated piece of kit in comparison.
To say a 29 year old woman could not have done such a thing without being shown you are essentially saying Sheila was so mentally challenged she would need help going to the toilet.