Now that’s interesting. Has she had any in the past that may have had feathered legs? Also the comb looks more rose than straight. Malines are a gentle bird. However any rooster when they get older tend to get protective. I seldom let any rooster out of my sight.
The comb and feathered legs on this chick typically aren’t a trait of a barred rock. Perhaps a Malines or Mechel
if I had to guess I’d say rooster, though.