I don't understand. You were asked if you know some one and you would say yes? In what regards do you know her? If you really don't know her don't name her. In Oregon, and in other states, there are laws on what information can be released for reference checks. It is best to use your superiors (management) for ref. checks. Most companies direct these calls to Human Resources department anyway. If you are using a friend let them know that you are listing them as a reference and they don't give any personal information out. People will dig for information they aren't entitled to-Married, children, age, etc. Tell your friends to be professional and watch their words. They only need to share you work well with others, you have a willing attitude, etc. Never use someone you aren't on good terms with. Hope you get the job-if you really want it.