NarniaFans Originals

At the end of the final installment of the Chronicles of Narnia, Susan is the only one of the Pevensies not present in the “true” Narnia — even the Pevensie parents, who have had no role whatever in the adventures, are there, just across the way, apparently in the “true England.” The catch, of course, is that all have apparently perished in a railway accident in our world; making this Lewis’ presentation of heaven: new and perfect lands where old things we treasured and lost are once again waiting for us.

‘Conversion’ is a word I would tend to use in reference to turning metric to imperial, or Pounds Sterling into Euros. It also has its other meaning, the one which means to change your religion or alter your spiritual path. It is certainly not a word I would ever use about myself.
I prefer the word ‘evolution’.