J.S.
Get her to urgent care or the ER unless she can wait to see the doctor until Monday. She needs stitches, but it can be in in-office procedure that's pretty simple. She won't even scar from it.
I'm guessing something else besides sleeping with earrings in tore her ear lobe. It takes a really traumatic occurrence for a tear to occur... simply going to bed with earrings in won't do it.