I really wonder about this stuff. These two people are sociopaths who only seek amusement without any morality. I'm not clear on whether the woman sought this guy out on the internet specifically to find someone to rape her 4 month old for a sadistic rush or whether she already knew him and then found out.
Some people just shouldn't be parents, but I believe souls have free will, too, so the soul who was the baby picked that woman as her mother. Why in the world would any soul pick a mother like that? She had to know what kind of person she was before she was conceived. I doubt the woman went from saint to sinner since the conception.
Was the soul who was the daughter intending to reform the mother? Did she believe life was worth the extremely likely possibility of abuse, or instead did she like it and was into it? It's twisted stuff.
If you believe in free will, how could she not know what kind of soul that woman was when she was considering her to be her mother?
I really think there is all kinds of evil in this world.
By the way, I doubt this is the first time something like this has happened. I'll bet it has happened over 100,000 times in human history, but now there is the internet and the TV to broadcast it worldwide.
Funny thing is, some people who find this offensive find horror movies with cannibalism or chainsaws and machetes killing innocent people to be really fun.
You wonder what sort of seed was planted that grew these people into evil monsters.