**Passive Voice: The money will be saved by her.**

In passive voice, the subject of the sentence becomes the receiver of the action. The focus is on the action rather than the doer of the action. In this case, the original sentence "she will save the money" can be transformed into passive voice as "the money will be saved by her." Here's a detailed explanation of the transformation:

**1. Identify the subject and the verb:**
- Subject: she
- Verb: will save

**2. Determine the direct object:**
- Direct Object: the money

**3. Transform the sentence into passive voice:**
- Move the direct object to the beginning of the sentence: The money
- Use the auxiliary verb "will be" + past participle of the main verb: will be saved
- Add the preposition "by" followed by the subject of the active sentence: by her

**4. Final Transformation:**
- The money will be saved by her.

In the passive voice sentence, the focus is on the money being saved rather than the person who is saving it. The original active voice sentence emphasizes the action of saving performed by the subject "she." However, in the passive voice, the emphasis shifts to the money itself and the fact that it will be saved by her.

The passive voice is often used when the doer of the action is unknown, unimportant, or when the speaker wants to emphasize the object or the action itself. It is also a common choice when the subject is already known or mentioned in the context.

Remember, when transforming sentences into passive voice, it is important to maintain clarity and ensure that the meaning of the original sentence is preserved.