The kids wanted to play hide and seek, until they found half of their mom and half of her later.
It's funny because her children found her murdered while playing hide and seek.
Why would I care about her? And it's funny because her children got murdered by her ex-husband.
You should know that making fun of a dead mother is very wrong. How do you think the children would feel if they heard you say that? You should offer your condolences when someone loses their life, not make tasteless jokes of it.