What is a 12 week strength training program for a woman that is a beginnner?

As a general rule, I would suggest that any beginner start with two 6 week programs. Both use circuit training.
The first 6 weeks work with light weight & high reps, this will help build muscular endurance and allow the client to work on perfecting their form at the same time.
For the second 6 weeks, work with moderate weight and reps to start building strength.