Thank you for your time!
Leghorns do come in a solid red variety. They aren't as common as White Leghorns, but some hatcheries do have Red Leghorns. Red Stars are brown layers and have red earlobes.
X2 on both of the above posts.Can you post a pic?
I know sometimes a pure bred bird who is supposed to have red earlobes can have white lobes for some reason. It may simply be a recessive thing that popped up in your bird, and she's otherwise a Red.