Although, even in the trailers of the new movie it’s clear that the jaded Diana that has lost faith is not the character we’re going to see, so how are we going to get from the one place to the other?
The events of Wonder Woman are essentially a prequel to her introduction in Batman v Superman: Dawn of Justice.
At the end of Dawn of Justice, Diana tells Bruce Wayne that she “walked away from mankind” one hundred years ago.
However, there’s no some question about how well the new movie keeps continuity with the last one.