Police say she was hit by a bullet that came through her bedroom wall.
It happened on the 1600 block of North 61st Street just after 4 a.m. on Wednesday.
Authorities say the gun was fired from inside the home.
She was hit in the shoulder and taken to CHOP for treatment.
At the time of the shooting, there were 12 people inside ranging in age from 10 months to 50 years old, according to police.
Authorities are questioning the family but so far, no gun has been recovered.
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