I had the opposite with my daughter - we went to Megadeth/Heaven & Hell - she wanted to leave after Megadeth played! Couldn't believe it, I'm like "Heaven & Hell is Dio and parts of Black Sabbath, we're not going anywhere!"
My other daughter did me proud when we went to see Rob Zombie/Iron Maiden. My daughter saw one of her little friends from high school who said "Yeah, you're here to see Zombie, right?" and my daughter was like "F**k that, Up the Irons!"