Another way to take care of it? I guess you could call her mom and dad and make them come get her... but that isn’t likely to happen.
Since “grandma” is the only one mentioned, I assume it’s just another great family unit in the minority population.
It's a good bet that dad is in jail, father of multiple other offspring by multiple other women, or dead and mom is a drug-addled mess or a child herself.
The underclass is full of families such as this where feral kids get pawned off on granny (often barely in her 30s) to raise.