The door latch isn't the best on a Scamp
. I always turn the handle, press in on the door to compress the door seal, and rotate the handle to the latched position. You can usually feel whether the tongue is extending fully or hanging up partway. If it hangs up, push harder on the door. Then a good tug to test and lock the door.
On the bright side, you'll never get locked out like the OP. Two Phillips screws remove the handle from outside, and you can manually turn the latch.
In any case I'm sure you'll never have this problem again- experiences like these make long memories!
When we were little my Dad backed up our tent trailer a bit too sharply, but being wider than a Scamp
, it left a dent in the side of the car rather than the bumper. It was there as a caution until we sold the car.