As soon as she gets home from grade school, instruct her little friend its time to go home, add that his parents may be getting worried.
I'm assuming they are small children, because if they are adults, you messed up raising that child. Too late now. Pack and move to Hawaii, then sell everything.
@NEWSMAX That's Tiger Wood? What happened? Did this happen to him while standing in line at the DMV for 5 years. He's lucky, I'm still standing in line