Η κόρη μου κοιμάται μόνο όταν βρίσκει την κούκλα της και το μικρό αρκουδάκι δίπλα στο μαξιλάρι.

Η κόρη μου is the subject of the sentence, so κόρη is in the nominative case.

• η = the feminine singular nominative article
• κόρη = daughter
• μου = my

So grammatically:

• η κόρη = the daughter
• η κόρη μου = my daughter

Greek often uses the definite article with family words and possessed nouns, where English does not.

In Modern Greek, weak possessive forms like μου, σου, της, μας usually come after the noun:

• η κόρη μου = my daughter
• το σπίτι μας = our house

Putting the possessive before the noun is not the normal pattern in this kind of sentence. The post-noun position is the standard one.

Κοιμάται is the 3rd person singular present form of κοιμάμαι, which means to sleep / to be sleeping.

Even though it has a middle/passive-looking ending (-μαι, -ται), it has an active meaning. This is very common in Greek. Some verbs simply use these endings as their normal form.

So:

• κοιμάμαι = I sleep / I am sleeping
• κοιμάται = she sleeps / she is sleeping

Here μόνο means only, and it modifies the whole when-clause that follows:

• κοιμάται μόνο όταν ... = she sleeps only when ...

So the idea is not just she only sleeps in some vague sense, but specifically the condition for her sleeping is that she finds those things.

Όταν βρίσκει uses the present tense because the sentence describes a habitual or repeated situation.

It means something like:

• whenever she finds ...
• when she finds ... in general

By contrast, όταν βρει would usually sound more like a single future event or a more specific completed finding:

• Θα κοιμηθεί όταν βρει... = She will sleep when she finds...

So in this sentence, βρίσκει fits the idea of a repeated bedtime pattern.

They are the direct objects of βρίσκει (finds), so they appear in the accusative case.

That is why you get:

• την κούκλα = the doll
• το μικρό αρκουδάκι = the little teddy bear

The verb βρίσκει is acting on these nouns: she finds the doll and the little teddy bear.

Της here is a weak possessive pronoun, meaning her.

So:

• την κούκλα της = her doll

Formally, this is the same genitive weak form that Greek uses for possession after nouns.

You will see the same pattern often:

• το βιβλίο μου = my book
• η τσάντα της = her bag
• ο αδερφός τους = their brother

Grammatically, της is attached directly to κούκλα, so it most clearly means her doll.

Because of the context, many listeners may naturally assume the teddy bear is also hers, but the possessive is not explicitly repeated there.

If you want to make it completely clear that both belong to her, Greek often repeats or rearranges the possessive, for example:

• την κούκλα της και το μικρό της αρκουδάκι
• την κούκλα της και το μικρό αρκουδάκι της

So the original sentence is natural, but slightly less explicit about the second noun.

Αρκουδάκι is a diminutive form, basically little bear / teddy bear, and nouns ending in -άκι are usually neuter.

That is why it takes:

• το = neuter singular article
• μικρό = neuter singular form of μικρός

So everything agrees:

• το μικρό αρκουδάκι

This is normal adjective-noun agreement in Greek: the article, adjective, and noun all match in gender, number, and case.

Και simply links the two direct objects:

• την κούκλα της
• το μικρό αρκουδάκι

So both belong to the verb βρίσκει:

• she finds her doll and the little teddy bear

It is a location phrase meaning next to the pillow.

Breakdown:

• δίπλα = next to / beside
• στο = contraction of σε + το
• μαξιλάρι = pillow

So:

• δίπλα στο μαξιλάρι = beside the pillow / next to the pillow

This phrase tells you where the doll and teddy bear are when she finds them.

Because μαξιλάρι is neuter.

The contraction depends on gender and case:

• σε + το = στο
• σε + τον = στον
• σε + την = στην

Since μαξιλάρι is neuter, Greek uses το, so the correct form is στο μαξιλάρι.

Greek uses the definite article much more often than English, especially with:

• possessed nouns
• familiar concrete objects
• ordinary noun phrases

So Greek naturally says:

• την κούκλα της
• το μικρό αρκουδάκι

Even where English might not feel the need for the, Greek usually does.

Yes, Greek word order is more flexible than English, but the original order is very natural.

The sentence starts with the subject:

• Η κόρη μου

then the main verb:

• κοιμάται

then the focused condition:

• μόνο όταν ...

Changing the order can shift emphasis. For example, moving μόνο can change what sounds most important. So while other versions may be possible, the given sentence is a smooth, standard way to say it.

In meaning, it describes the location of the objects that she needs to find. In other words, she sleeps only when she finds the doll and the little teddy bear next to the pillow.

So grammatically it comes after the objects, but semantically it tells you where those objects are.

You can think of it as answering:

• Where does she find them?
• Δίπλα στο μαξιλάρι

Stress in speaking can change the emphasis without changing the basic grammar.

For example:

• stressing μόνο highlights the restriction: she sleeps only under this condition
• stressing κούκλα or αρκουδάκι highlights the objects
• stressing δίπλα στο μαξιλάρι highlights the location

The written sentence itself is neutral and natural, but spoken emphasis can make one part stand out more.