About 4 or 5 months ago i put an ad in the paper for staff. A lady answered the ad and came in for the interview. She didn't get the job because she was not suited for the particular position at the time. I rang her and told her that and told her i would keep her on file and if anything came up that would be suited to her I would call her. I have now placed another ad in the paper for a similar position and she has left a message on my phone. The client whom i am looking for the staff member for is after someone who is half the age of this woman therefore she is obviously not suitable. What is my legal position in what i can tell this woman as to why she is again not suitable?