Do I sense a bit of racism here on the part of Martha Batiz?

Who exactly is a legitimate Mexican?

Is she hinting that Ms. Dresser is not a legitimate Mexican because she is the Mexican-born daughter of a white American, who she thinks could not possibly be a Mexican by virtue of her being, ahem, a Gringo?

Certainly most Canadians' imagination would conceive of a Mexican as looking more like Ms. Batiz herself, and nothing like the Anglo-Saxon Ms. Dresser. Is Ms. Batiz implying that Ms. Dresser is unrepresentative of Mexicans?

Hmmm... you make a legitimate point in the article, Ms. Batiz, but I disagree with your claim that there are legitimate and illegitimate Mexicans.