Mean parents and shattered dreams

So, we were at my mother-in-laws for dinner on Sunday. Good old Grandma Louise gave Maria this Wizard of Oz wand to play with. It was one of those toys that flashes lights and plays a tinny sounding electronic tune. Lou and I hated it instantly - it was playing this warbly, high-pitched, truly horrible sounding version of "Over the Rainbow". The pitch and sound quality were offensive-sounding at best and immediately annoying. Well, of course Maria just loved it, and spent the rest of the evening walking around and playing it over and over and over and over...well, you get the idea. Lou was getting more irritated by the minute and would tell her to turn it off, but after a few minutes of blissful silence, we would hear the sickening sound once more.

Well, I was trying to fix something on Louise's computer and Lou was looking at the paper, when all of a sudden we heard a thunk and a crash - it almost sounded like breaking glass. I turned around to see what had happened, and saw Maria splayed out on the floor with the wand in front of her, looking like this:

Well, Lou started laughing hysterically, and I have to admit, I couldn't stop the smile that immediately spread across my face. I thought "Hooray, problem solved! No more obnoxious toy to listen to!" Meanwhile, Maria was almost in tears, saying "it's not funny, it's NOT FUNNY, Daddy! Oh, my beautiful wand..." Oh contraire, Maria, it was SO funny, that I started laughing myself. I couldn't help but think that Lou and I had almost wished this event into reality, and I just couldn't stop laughing at the irony of it all. If you just could've seen it - the annoying music over and over, then suddenly the crash and Maria's and Lou's subsequent antics...maybe you had to be there...

So my question is, is it awful that we found this so amusing? I'm laughing now just thinking about it! Are we the most evil parents ever?