I think these things are just a coincidence. If the young grave digger never dropped his book, if he was less clumsy, things would be very different. It is a coincidence that Death noticed Liesel. Non of this can be planned. You can not plan out your future and neither can anyone else. It is only chance that I was born. My parents could have been smart but nope! That’s chance. Watching The Simpsons and seeing Lisa playing the saxophone was chance to set up my love for music. I couldn’t have planned any of that and neither could anyone else. So Liesel finding the books and stealing them, Liesels little brother passing away, sad as it is, it’s chance. It happened and then affected her. She couldn’t have seen any of this coming.