Thanks Neal, Lucy does sound a lot like her mother. I have kept Lucy from the males this spring/summer so far, except a couple days when someone, pushed their way through the fence, darn boys. However, they were on the side of her not where they were suppose to be LOL. If my memory is correct, lots going on here, she has not had any eggs yet this year until the ones laid last week and now the ones she's carrying. Not sure when egg laying season is. Her very first two every clutches were in the first June 2015 they were both surface dropped and about 2-3 weeks apart. Then she nested and laid in August and again in September and again October all in dug nest. Then she had some surface eggs twice during the winter and she didn't have a proper nesting spot. Didn't think she would lay in the winter. That was all in 2015. Finally found my records of 2015. Can't find last years. I'm bad at record keeping. Last year, 2016 she did have 4-5 clutches but none were fertile. All dug and nested. Not sure of the months though.
Her nesting ones all seemed about a month or so apart. The surface ones were all closer together, but came out a few at a time and about 2 weeks apart.
Are you sure none were fertile, or just none hatched? Did you candle the eggs? I have always had poor luck with incubating the mother's eggs, but when I leave them in the ground over winter the hatch rates jump from the low teens to 60% to 70%.
I can't speak to leopards in all areas of the US, but with most in AZ the egg laying season is in sync with the monsoon season. Mid-June is when it starts, but usually extends beyond monsoon season to November and December. So it sounds like yours began developing in (what I would consider) the normal season.