La nounou connaît bien la crèche, alors les parents lui font confiance.

French usually uses connaître for being familiar with a person, place, or thing, and savoir for knowing a fact or knowing how to do something.

So:

• connaître la crèche = to know the daycare / be familiar with it
• savoir que... = to know that...
• savoir faire... = to know how to do...

Here, the nanny is familiar with the daycare, so connaît is the natural choice.

Here bien means well. It strengthens the idea of connaître:

• connaître la crèche = to know the daycare
• bien connaître la crèche = to know the daycare well / to be very familiar with it

It does not mean good here. It is an adverb modifying the verb.

Nounou is an informal, everyday word for a person who looks after children, usually nanny or sometimes babysitter, depending on context.

It is less formal than words like:

• une nourrice
• une garde d’enfants

In modern spoken French, nounou is very common.

In this context, la crèche means a daycare center or nursery for young children.

This is important because English speakers may know crèche in other meanings, such as a Christmas nativity scene in some contexts. In everyday modern French, crèche very often means a childcare facility for very young children.

Yes. In this sentence, both nouns are grammatically feminine:

• la nounou
• la crèche

French nouns have grammatical gender, and the article must match:

• le for masculine singular
• la for feminine singular

Even when a noun refers to a real person, the grammatical form still matters. Nounou is normally treated as feminine.

Here alors means so, therefore, or as a result. It links the two parts of the sentence logically:

• the nanny knows the daycare well
• so the parents trust her

It introduces a consequence. In other contexts, alors can also mean then, but here it clearly means so / therefore.

Because faire confiance à quelqu’un is built with à.

So:

• faire confiance à la nounou
• when replaced by a pronoun: lui faire confiance

That is why French uses lui, not la.

Compare:

• Ils la voient = They see her
• Ils lui font confiance = They trust her

In the second sentence, her is the object of à, so French uses the indirect object pronoun lui.

French often expresses to trust someone with the fixed expression faire confiance à quelqu’un.

Literally, it looks like to make/do trust, but you should learn it as one unit:

• faire confiance à quelqu’un = to trust someone

Examples:

• Je fais confiance à mon frère.
• Tu lui fais confiance ?
• Nous faisons confiance à cette équipe.

This is one of those cases where French and English organize the idea differently.

French object pronouns usually come before the conjugated verb.

So:

• Les parents font confiance à la nounou.
• Les parents lui font confiance.

That word order is normal in French:

• Je le vois.
• Elle nous parle.
• Ils lui font confiance.

So even though English says trust her, French puts the pronoun before the verb phrase: lui font confiance.

Normally, no. In standard French, when the object is a pronoun, you usually use lui, not à elle:

• correct: Les parents lui font confiance.
• less natural / usually wrong in this context: Les parents font confiance à elle.

You might hear à elle only for special emphasis or contrast, for example:

• Ils font confiance à elle, pas à lui.

So in an ordinary sentence, lui is the correct form.

Because the subject is les parents, which is plural.

The verb faire is conjugated here in the third person plural:

• je fais
• tu fais
• il/elle fait
• nous faisons
• vous faites
• ils/elles font

Since les parents = they, French uses font.

Here bien should stay with the verb connaît, because it describes how well the nanny knows the daycare.

So:

• La nounou connaît bien la crèche. ✅

You may also hear:

• La nounou connaît la crèche très bien.

That is possible, but connaît bien la crèche is more natural and more typical in this kind of sentence.

Connaît is pronounced roughly like ko-nay.

The î with a circumflex is part of the spelling of this verb form. It comes from the conjugation of connaître:

• je connais
• tu connais
• il/elle connaît

The circumflex often reflects an older historical spelling. For learners, the main thing is to recognize it as the il/elle form of connaître.