Complex sentence: This small press run became a collector's item (one of which Margaret's father is in possession), and many of Vida's fans considered the omission of the thirteenth story a delightful mystery, all of them hungry for the answer to it.
Split into simpler sentences: This small press run became a collector's item (one of which Margaret's father holds). Many of Winter's fans considered the omission of the thirteenth story a delightful mystery, and all wanted the answer to it.