I was going to say that this was a “He said, she said” situation. But the account by the eyewitness is totally credible, and damning to the ranger. She should be investigated and, if this holds up, FIRED.
Good thought... not going to happen.
No, charged with multiple felonies, tried and imprisoned if found guilty. If the laws that limit The Great Unwashed are to be equally applied to Law Enforcement, we have Kidnapping and Assualt with Intent to cause bodily harm; if the warning of a heart condition is upheld, I see Attempted Murder.
I cannot, under threat of weaponry - detain you for my amusement. I cannot fire a Taser upon you, maliciously, either. This is exactly what she did; so why not make her pay the same price you or I would pay?
Funny thing about doing this - I'm sure that other Law Enforcement Officers would see that they can't be thugs hiding behind a badge - if they decide to engage in thuggry - then they can got to jail like any other thug.
She should be investigated and, if this holds up, Tazed, then FIRED.