If you're asking this for a female beginner trainee, she should just stick to the basic staples - once she gets her nutrition and training sorted.
If you're asking for a more experienced female trainee, then she still needs to have her nutrition, training, and basic supplementation correct, but what Testosterone booster she uses will depend on her goals and needs, since they all have various effects and some are better for different goals.
Regardless of her training status, FIRST set her NUTRITION - this is the most important factor and predominantly will determine her success or lack of success in achieving her body goal/s - AND TRAINING up to target her goals. Aside from the basic staples, supplements should be the LAST piece of the puzzle to be considered.
If you're asking for a woman who wants to get leaner or gain more muscle mass, then I wouldn't recommend a Testosterone booster but a Growth Hormone or Growth Hormone/Testosterone booster/stack - read (and get her to as well) the article Breaking the Myth: Increasing Testosterone in Females = Muscle Accretion, Strength Gains, and Fat Loss to see why.
The Primordial Woman