Complex sentence: At the time "Flopsy Bunnies" was being considered for development, Potter had grown tired of drawing rabbits, but realized children liked her rabbit stories and pictures best and decided to offer another rabbit book.
Split into simpler sentences: At the time "Flopsy Bunnies" was being considered for development, Potter had grown tired of drawing rabbits. She realized however that children liked her rabbit stories and pictures and decided to offer her fans another rabbit book.