Her usage is correct. It's not that common, but it's real:
"One definition of career is to move at full speed, especially with an uncontrolled or unsteady motion. Careen used to mean (1) to turn (a ship) on its side for cleaning or repairs, and (2) to lurch or sway, especially when in motion. But in modern usage, careen has come to mean to move fast, especially in an uncontrolled way."
A copy editor made this case to me decades ago. I prefer "careen," but we can let her live.
Let her live but kill her auto correct feature ... they can be so helpful.
I can understand the French origin and any reliance on using it in some odd manner, but it isn’t the standard definition used by many dictionary sources of notability, if at all, certainly not one used in common media.
Yes, English is very confusing. Truck is another word that is used in a confusing way.