The descriptions of the female characters (and there are a lot of them considering it really is geared to boys) have the same characteristics as the male characters-all are flawed. So she is upset because there are no female leads and not all female characters are perfect?
The show is actually more disturbing in how it treats boys in the sense that it trains young boys to be good little worker bees. Now personally I think that is not necessarily a bad thing, to teach good work ethics to children, but where are the shows for girls upholding hard work, getting along with higher ups, taking punishment with good grace and learning how to make oneself useful?
There are none. Girls shows are all about girls doing and getting what they want, or being heroes, or triumphing over boys. What if there was a show about girls staying at home and learning how to keep a house? They would be punished if they missed a spot, or were slow to bring the tea....now that would be a comparison to Thomas the Tank, and it would go over like a lead balloon.
My kids loved Thomas the Tank, and I enjoyed it too. But if you are going to read into it, at least be accurate.