Did the mama kill the child?

Um...i think the twist at the end is that the lady killed the kid and she doesn't belive herself that she's done it.
and she kills herself????
if thats not right sorry. i know it sounds kinda morbid

I'm completely confused! You have got to explain it to me! I really don't get it!
And I don't get the humor in this poem! Did you place it in the wrong category?