Mini Rant about Unruly Kids

Today I was sitting in the pool had my Psychology book by my side (on the side of the pool deck with a towel over it to protect it). My younger sibling was swimming and he wasn't splashing me or anything - mind you he knows how expensive books are and not to splash while in the pool. We're out there for an hour or so and then this mother and her daughter come. The mother (who I've seen there before while I was reading my book) tells her daughter repeatedly NOT TO SPLASH. Well don't you know the little girl LITERALLY jumps in RIGHT NEXT to me and drenches the current pages I'm reading (even with the towel on it) and what really happens is it leaks to four pages. I didn't even know what to say. I was so mad I just literally got up and left. Idk how people's kids can be so inconsiderate of others property and not even apologize when they do such a thing. You know I may not have paid more than 31 dollars for the book (but if I bought it brand new I would have paid at least 140!- and it's not like she knows that though)! And who's to say I don't want to try and SELL the book so I can get back at least some of what I paid for it.... I mean seriously, where is the respect now-a-days?!