I can't see it. Evil, spoiled? At least not too spoiled. I mean, a certain amount of pampering and spoilation is a good thing, right? Actually, I've never thought there was such a thing as being 'too spoiled'. That's as ludicrous as 'too much money', isn't it?
My half-siblings are all pretty much okay - Molly can be a pain, but she's four, so she's supposed to be - it's the step siblings that can be perfectly awful. Fortunately, I don't have any right now since Michael doesn't have any kids and Courtney's only kid is Molly. Mom's last husband, though? *shudders*