^ Uh oh! *I am gonna try to make light of your quote above.*
I don't even remotely claim to know the girl. But she is from Brooklyn. People who come from Brooklyn are famously known for their distinct accent. Where she lived, that was the norm.
She came out with the features she was born with, and made the most of what she could with them. This is the most you could ask anybody to do, right?
In fact, hiring Jaslene may have opened up a whole sector of the previously unattended Latino spending power. Now Latinas can look at her and think: "I really can find my makeup in mainstream markets. I finally identify with that face they put in that ad." Hispanic/Latino people make up the biggest minority population in the United States right now. Gosh, if they could convert even a small fraction of Latinas to use CG exclusively, well, they just made their money back many times over right there!
They could go with someone soft, beautiful, and forgettable, to try to convert the already converted... or, they could try something new, which is what they did.