yeezevee,
you know muslims they will say Allah said your kids the "HALAL" ones not the HARAM ones. Probably the grandmother thought she was doing her daughter a favour by giving her a chance to face the society without disgrace (in her opinion ofcourse), You know intelligent religions, help and result in intelligent cultures and result in intelligent people.

Wrong. This death was unislamic.
The hadith where mohammed waited until the woman who got pregnant through adultery, gave birth before having her stoned to death, shows that the baby was supposed to not be killed too. They won;t reply trying to defend this practise, they will point out that it's not islamic, and it isn;t.
There is another hadith that talks of what should happen to a baby that is born out of wedlock:
Book 11, Number 2126: sunan abu dawud
Narrated Basrah:
A man from the Ansar called Basrah said:
I married a virgin woman in her veil. When I entered upon her, I found her pregnant. (I mentioned this to the Prophet).
The Prophet (peace_be_upon_him) said: She will get the dower, for you made her vagina lawful for you.
The child will be your slave. When she has begotten (a child), flog her (according to the version of al-Hasan). The version of Ibn AbusSari has: You people, flog her, or said: inflict hard punishment on him.
So, baby becomes slave, and woman gets beaten hard, but no killing the baby, the way that has been done in this sick story.
I'd like to choke the grandmother to death myself. Sick bastards.