Margot Kidder sadly had alot of depression issues which led to her suicide in 2018. I don't think Christopher Reeves children intentionally left her out it might have to do with the timeline in which they did this and the fact she was already gone when they did.

Sadly Margot Kidder had various issues which led to her suicide in 2018. You just never fully understand what others are experiencing sometimes and she was the best Lois Lane ever. Christopher Reeves is greatly missed. He actually came to the city I live in when I was 15 to earn his pilots license at a local airport. I can't go see this movie despite the fact it was done by his children to honor such an amazing father and individual. It would be too heartbreaking to watch.