Do I tell my mate what his mrs did?

[RAPID_BA]

I was at hospital with a mates mrs when she needed an escort to her car. I walked up levels of the carpark to find my mates ls3 clubbie hsv parked on the roof.

My mates mrs offered to drive me back to the entrance of the hospital. I took the lift.

I thought id do a covert operation to assess how she drove his car. Gearchanges (in carpark) were satisfactory, but as she came down the ramps she scrubbed the front bar on every ramp.

No regard at all, I tried to let it pass but again and again as she went down the ramps. Scrub and scryb.

I couldnt take it anymore, I asked what that noise is and she responds its probably the front of the car scraping? Like there was nothing wrong with that. I asked if my mate would mind the scrapes, she giggled and said id just say he did them on the weekend?

Do I tell him?

Yes as its recklessness of his possessions
No as its not my business
No as its just a hsv ls3?
No because she would just deny it
Yes, otherwise im harbouring a terrorist?