Just try to understand if she was actually doing something wrong? Maybe it's just a straight road and she evaluated that it was not dangerous to drive at that speed, nothing actually happened so you are basically creating punishment and consequence for something that had none.
Well, it's a judgement call, but a 16 year-old new driver (in my opinion) is not equipped to reasonable evaluate the safety or otherwise of driving at speed. In addition, most states have heavy penalties for juvenile driving offenses and she will be aware of that (because those states put questions about those penalties on the tests).
Discussion on question by Mister Posi…
Discussion on question by Mister Posi…