That's not a Barred Rock, even hatchery stock, as the ear lobes are white and even hatchery BR's have red ear lobes and a stronger barred pattern.
It's very hard to see her comb. Having a good comb photo would help. Also the white ear lobes don't match her body type.
No matter...I think she is a mixed breed either hatchery oops or barnyard mix....background of where you got her would help determine better.
She might have some Wyandotte if that is a rose comb (better photo would help)...or some Wyandotte in her as her body suggests that.
My guesses.
LofMc