I know the grill attachment used to be a weak point, and maybe still is, but doesn't it seem just the tiniest bit suspicious that both grills fell off at the same time, when your niece just happened to be in the right place to push the domes in ?

Is there any chance the grills had a bit of 2-year-old help ?

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8