Have a look at another option.

Even though the store manager didn't call her names, she was treated differently from the customer before her who was a different race.

Good try.

Good answer.

Her case might be made stronger because the previous customer was of Anglo Australian appearance.

Good try, but there is a more appropriate answer.

Complaints are viewed on their own merits by our office. Presenting with previous experiences in different stores would not support Dulcie's claims.

However, it may say something about the stereotypical views held about Aboriginal people.