First, I am white and I speak Spanish. Knowing a language or being from an ethnicity (Hispanic) doesn´t mean that a person should be of one color. Second, If you are pharmacy technician, you are there to help people as much as you can. So, if you can speak Spanish, even if it is broken Spanish, it would offer a lot of help to the patient. Third, if your coworker doesn´t like people who can´t speak English, then I hope she never has to go to a foreign country where she would not be able to communicate in English.