When exactly did you get the snakes, and when was the last time they were grouped up? I heard up to 9 months is known, but I've been wondering about the whole het thing lately with females that were bred to a different male the previous year. It seems like females can retain for a long time, but I think I've only heard about late in the season girls throwing retained clutches, or new adult females, but I haven't heard of anyone getting a retained clutch from a girl that's been in someone's collection for more than a year, the following breeding season.