She tried to drive the car like a normal car, i.e., by not specially planning for charging.
And in that sense, the trip failed for the Tesla, because trying to drive it like a normal car in Europe was anxiety-inducing. Which was the whole point of the article...
Replying to the dead comment: the point of not using the Tesla-specific tools was that she wasn't trying to do a Tesla-specific road trip. She was trying to do a roadtrip in an EV, and just happened to choose a Tesla because it had most range of the EVs available to rent (many of the EVs available to thoses of us in California aren't yet available elsewhere).
And in that sense, the trip failed for the Tesla, because trying to drive it like a normal car in Europe was anxiety-inducing. Which was the whole point of the article...