She lost Steve a second time, and nothing really seems to happen (until/if Wonder Woman 3) to warrant her coming out of half retirement, most likely. She had no time/chance to get to the Kryptonians as the entirety of Man of Steel was relatively quick and and isolated. Then we are straight into BvS where she reappears.
Do we get an explanation as to why she apparently forgets how to fly? I mean, if she needs to hang off a plane to get a run up to just flying/gliding slowly then I guess it's not that useful anyway, and I can't remember a point where it would have been useful in the Doomsday fight or Justice League anyway, but it bothers me a little.