A mi tía no le gusta que dejemos la cucharilla dentro de la taza ni el vaso fuera del posavasos.

Yes, they both point to the same person, but they do different jobs.

• le is the normal indirect object pronoun required with gustar
• A mi tía adds clarity or emphasis

So Spanish often says both:

• A mi tía no le gusta...
• literally: To my aunt, it doesn’t please her...

This is very common in Spanish and does not sound redundant to native speakers.

Gustar works differently from English to like.

In English:

• My aunt doesn’t like that we leave...

In Spanish, the structure is more like:

• To my aunt, it is not pleasing that we leave...

So in:

• A mi tía no le gusta que dejemos...

the person who experiences the feeling is mi tía, marked by le, and the thing that is disliked is the whole clause:

• que dejemos la cucharilla dentro de la taza ni el vaso fuera del posavasos

Because the thing acting as the grammatical subject of gusta is the whole clause:

• que dejemos la cucharilla dentro de la taza ni el vaso fuera del posavasos

A whole clause is usually treated as a singular idea, so Spanish uses gusta, not gustan.

Compare:

• Le gusta el café. = He/she likes coffee.
• Le gustan los libros. = He/she likes books.
• Le gusta que llegues temprano. = He/she likes that you arrive early.

That last one is the same pattern as your sentence.

Because after expressions like no le gusta que..., Spanish normally uses the subjunctive.

Here, dejemos is the present subjunctive of dejar for nosotros.

Why subjunctive? Because the sentence expresses:

• a reaction
• a judgment
• a feeling about someone else’s action

So:

• A mi tía no le gusta que dejemos...

means:

• My aunt doesn’t like us leaving...
• or more literally, My aunt doesn’t like that we leave...

If you used dejamos, it would sound wrong in standard Spanish in this structure.

Dejemos is:

• verb: dejar
• person: nosotros
• tense/mood: present subjunctive

So it means:

• that we leave
• that we put/leave behind
• depending on context

In this sentence, dejar means something like to leave or to leave sitting/placed somewhere.

Because que introduces the subordinate clause.

• A mi tía no le gusta que...
• My aunt doesn’t like that...

After verbs or expressions of emotion, reaction, approval, disapproval, etc., Spanish often uses:

• [main clause] + que + subjunctive

Examples:

• Me gusta que vengas. = I like that you come.
• No me gusta que fumes. = I don’t like that you smoke.
• A mi tía no le gusta que dejemos...

So que is necessary here.

Here ni means nor, or in natural English often or after a negative.

The sentence is negative because of no:

• no le gusta...

So Spanish uses ni to add another thing included in that negative idea:

• ...la cucharilla dentro de la taza ni el vaso fuera del posavasos
• ...the spoon in the cup nor the glass off the coaster
• more natural English: ...the spoon in the cup or the glass off the coaster

In Spanish, after a negative, ni is very common where English might use or.

Yes. The verb applies to both parts.

So the full idea is:

• que dejemos la cucharilla dentro de la taza
• ni [que dejemos] el vaso fuera del posavasos

Spanish often omits the repeated verb when it is clearly understood.

So the sentence means:

• she doesn’t like us leaving the spoon inside the cup
• nor leaving the glass off the coaster

Because dentro de specifically means inside.

• en la taza = in/on the cup, depending on context
• dentro de la taza = inside the cup

Here the speaker wants to be precise: the spoon is being left inside the cup.

Similarly:

• fuera de = outside/out of
• fuera del posavasos = outside the coaster / off the coaster

These are fixed expressions:

• dentro de
• fuera de

And del is simply de + el.

Because del is the contraction of:

• de + el = del

So:

• fuera de el posavasos ❌
• fuera del posavasos ✅

This contraction is required in standard Spanish, except when el is part of a proper name.

Spanish uses the definite article more often than English.

Here, the objects are understood as familiar, specific household items in the situation, so Spanish naturally says:

• la cucharilla
• la taza
• el vaso
• el posavasos

In English, we might sometimes drop articles or use possessives depending on style, but Spanish usually keeps the article in this kind of sentence.

Cucharilla is a small spoon, often a teaspoon or coffee spoon.

It comes from:

• cuchara = spoon
• cucharilla = little spoon / teaspoon

In Spain, cucharilla is very common. In other varieties of Spanish, you may also hear:

• cucharita

So here la cucharilla is likely the little spoon left in the cup after coffee or tea.

Yes, if the context already makes it clear who le refers to.

You could say:

• No le gusta que dejemos la cucharilla dentro de la taza ni el vaso fuera del posavasos.

That would mean:

• She doesn’t like us leaving the spoon in the cup or the glass off the coaster.

But adding A mi tía makes it clear and can also add emphasis:

• As for my aunt, she doesn’t like...

Because in Spanish, no normally goes directly before the conjugated verb.

So:

• A mi tía no le gusta...

not:

• A mi tía le no gusta... ❌

The core verbal part is le gusta, and the negative marker no comes before it.

You can, but it sounds unnatural in English.

Very literal:

• To my aunt, it is not pleasing that we leave the little spoon inside the cup nor the glass outside the coaster.

Natural English:

• My aunt doesn’t like us leaving the spoon in the cup or the glass off the coaster.

So when learning it, it helps to understand both:

• the literal Spanish structure
• the natural English meaning

Both are useful.