She should have been shoved back...for her own good as well as the officers.
Would you have this same opinion if she was 62? How about 42? 32? Where does age become a factor and not the actions of the individual?
As a former officer, I can tell you first hand...I would never have allowed this to have gone as far as it did...but THAT officer did. That was HIS choice, and it was justified.
BTW...at all times SHE had the CHOICE to do as she was told. He wasn't asking her to do anything out of the ordinary. Even after being threatened with being tased...she STILL is stupid enough to say "I dare you"....