Sounds to me like the childrens' mother is a fuck up in life so her mom got handed the responsibility. If I were the father of her children I'd probably take them too.

I'm not saying I know anything about their situation, but she named her kids after video game characters, and judging by her profile she thinks about nothing but video games and the internet.

I mean, she's 23, and her mother has custody of her children, there's not much else to assume from that.