There are three principles of training: overload, specificity and progression. Ashley should use these principles in her fitness program in order to improve her performance, skill, ability, and physical fitness.
The principle of progression says that Ashley must progressively or gradually increase the workload, so she should begin with less weight and increase it in time. Also at the beginning she should make several reps and sets and progressively increase the number.
If he have the following options:
1. Begin lifting 5-lb. weights seven days a week, aiming to complete 10 sets
2. Begin lifting 10-lb. weights three days a week, aiming to complete two sets
3. Begin lifting 15-lb. weights five days a week, aiming to complete five sets
4. Begin lifting 25-lb. weights two days a week, aiming to complete one set
The most realistic plan is number 2. The weight is OK, and also the number of sets.