Meine Schwester sagt, sie wolle einerseits Geld sparen, andererseits aber nicht auf den Sprachkurs verzichten.

Wolle is the Konjunktiv I form of wollen. In German, Konjunktiv I is often used for reported speech or indirect speech.

So:

• sie will = she wants
• sie wolle = she says she wants / it is reported that she wants

Using wolle creates a little distance: the speaker is reporting what the sister said, not directly stating it as their own fact.

In other words:

• Meine Schwester sagt, sie will ... = more direct, more everyday
• Meine Schwester sagt, sie wolle ... = more formal, more clearly reported speech

Yes. This is a classic example of indirect speech.

Direct speech would be something like:

• Meine Schwester sagt: Ich will einerseits Geld sparen, andererseits aber nicht auf den Sprachkurs verzichten.

Indirect speech reports that content from the outside:

• Meine Schwester sagt, sie wolle ...

The pronoun changes from ich to sie, and the verb changes to Konjunktiv I.

German has two common ways to report what someone says:

1. with dass

   • Meine Schwester sagt, dass sie ... will.

2. without dass, using Konjunktiv I

   • Meine Schwester sagt, sie wolle ...

Both are correct. The version without dass is especially common in more formal written German, journalism, and careful reporting.

So the structure here is not strange; it is just a more formal way of reporting speech.

If you add dass, the clause becomes a normal subordinate clause, so the finite verb goes to the end.

For example:

• Meine Schwester sagt, dass sie einerseits Geld sparen, andererseits aber nicht auf den Sprachkurs verzichten will.

Notice the difference:

• without dass: sie wolle ...
• with dass: sie ... will

So two things change:

1. the verb form usually goes back to the normal indicative (will)
2. the finite verb moves to the end of the dass clause

It is a fixed pair that means something like:

• on the one hand ... on the other hand
• in one respect ... in another respect

It introduces two contrasting sides of the same situation.

Here:

• einerseits Geld sparen = on the one hand, save money
• andererseits aber nicht auf den Sprachkurs verzichten = on the other hand, not give up the language course

This pair is very common in German for expressing a tension or conflict between two goals.

Aber adds extra contrast. The pair einerseits ... andererseits already shows opposition, so aber is not absolutely necessary, but it is very natural.

Compare:

• einerseits ..., andererseits ... = balanced contrast
• einerseits ..., andererseits aber ... = slightly stronger contrast

So here aber emphasizes that the second point goes against the first one.

Good question. The sentence is using one wolle for both infinitive phrases.

The structure is basically:

• sie wolle [einerseits Geld sparen], [andererseits aber nicht auf den Sprachkurs verzichten]

So the second half does not repeat wolle, because it is understood.

A fuller version would be:

• Meine Schwester sagt, sie wolle einerseits Geld sparen, andererseits wolle sie aber nicht auf den Sprachkurs verzichten.

That is also grammatical, but more repetitive. German often leaves out repeated material when it is clear from the context.

The verb verzichten is used with the preposition auf:

• auf etwas verzichten = to do without something / to give something up

This verb-preposition combination requires the accusative case. That is why we get:

• der Sprachkurs → auf den Sprachkurs

So:

• nominative: der Sprachkurs
• accusative after auf verzichten: den Sprachkurs

This is something you usually just have to learn together as a unit:

• verzichten auf + accusative

Because nicht is negating the infinitive phrase auf den Sprachkurs verzichten.

The idea is:

• she wants not to give up the language course

So nicht comes right before the part being negated:

• nicht auf den Sprachkurs verzichten

If the sentence were arranged differently, the focus of the negation could change. Here the meaning is very clear: the thing she does not want to do is give up the language course.

In German, many abstract or mass nouns are used without an article when speaking generally. Geld here means money in a general sense, not some specific money.

So:

• Geld sparen = to save money

This works just like in English, where you also usually say save money, not save the money, unless you mean specific money already mentioned.

Usually, everyday spoken German is less formal. Many speakers would simply say:

• Meine Schwester sagt, sie will einerseits Geld sparen, andererseits aber nicht auf den Sprachkurs verzichten.

That sounds very natural in conversation.

Wolle is more typical of:

• formal writing
• journalism
• reported statements
• careful or official-style language

So yes, it is real German, but it has a more formal/reporting flavor than casual speech.

Because a new clause begins there:

• Meine Schwester sagt,
• sie wolle ...

German uses commas to separate clauses more consistently than English does. Here the comma marks the boundary between the main clause and the reported clause.

So even without dass, the comma is still required.