Evil can be undone, but it cannot 'develop' into good. Time does not heal it. The spell must be unwound, bit by bit, 'with backward mutters of dissevering power' - or else not.
C. S. LewisAslan" said Lucy "you're bigger". "That is because you are older, little one" answered he. "Not because you are?" "I am not. But every year you grow, you will find me bigger".
C. S. LewisDo not look sad. We shall meet soon again." "Please, Aslan", said Lucy,"what do you call soon?" "I call all times soon" said Aslan; and instantly he was vanished away.
C. S. Lewis