Answer: She might persist pre-diet weight which is near to her body's set point
Step-by-step explanation:
Pre-diet weight is the weight that a person persist before starting particular dieting plan.Set point for any person's body is the particular range of weight that is maintained by body for carrying out general body functioning.
According to the question, Lucile's is not successful is reducing body weight even after following strict diet because she might have set point weight of her body near to pre-diet weight.
Her body is fighting against reducing weight regardless of dieting as pre-diet weight might be almost same with set point which will not let her lose weight for optimal execution of body parts.