Ma fille ouvre la portière doucement pour ne pas toucher le mur du parking.

Here it most naturally means my daughter.

In French, fille can mean:

• girl
• daughter

When it comes after a possessive like ma, ta, or sa, it very often means daughter:

• ma fille = my daughter
• ta fille = your daughter
• sa fille = his/her daughter

So in this sentence, Ma fille is understood as My daughter.

La portière is specifically a car door.

By contrast:

• la porte = a door in general
• la portière = a vehicle door, especially a car door

So ouvre la portière is more precise than ouvre la porte here, because the sentence is clearly about opening a car door near a wall.

Ouvre is the 3rd person singular present tense of ouvrir.

So:

• j’ouvre = I open
• tu ouvres = you open
• il / elle ouvre = he / she opens

Because the subject is Ma fille, the verb is ouvre.

In English, this present tense can be translated in different ways depending on context:

• My daughter opens...
• My daughter is opening...

Doucement means gently or softly.

French adverbs can sometimes move around more than English adverbs. In this sentence, ouvre la portière doucement sounds natural and means she opens the door gently.

You could also hear:

• Ma fille ouvre doucement la portière

Both are possible. The version in your sentence puts doucement a little later, after the object la portière, which is very common in everyday French.

So the placement is mainly a matter of natural French word order, not a big change in meaning.

Here pour means in order to or so as to. It introduces the purpose of the action.

So:

• ouvre la portière doucement = opens the car door gently
• pour ne pas toucher le mur = in order not to touch / hit the wall

Together, it means she is opening the door gently so that it does not make contact with the wall.

A useful rule:

• pour + infinitive is used when the subject stays the same.

Here, the same person is doing both things:

• she opens the door
• she is trying not to touch the wall

Because with an infinitive, French normally puts ne pas together before the verb.

So:

• ne pas toucher = not to touch
• ne pas oublier = not to forget
• ne pas entrer = not to enter

This is different from a conjugated verb, where ne and pas usually go around the verb:

• elle ne touche pas = she does not touch

So:

• conjugated verb: ne ... pas
• infinitive: ne pas + infinitive

That is why pour ne pas toucher is correct.

Literally, yes: toucher means to touch.

But in this kind of context, English often uses a stronger verb:

• touch
• hit
• bump
• scrape

If someone opens a car door near a wall, toucher le mur often implies making contact with the wall, possibly by accident.

So depending on the situation, English might translate it as:

• so as not to touch the wall
• so as not to hit the wall
• so as not to bump the wall

Du is the contraction of de + le.

So:

• de le parking becomes du parking

This structure often means of the:

• le mur du parking = the wall of the parking lot / garage

French does this contraction automatically:

• de + le = du
• de + les = des

So du parking is not a separate word to memorize by itself here; it is just de + le contracted.

Not exactly.

In French, un parking usually means:

• a parking lot
• a car park
• sometimes a parking garage or parking area

It does not usually mean the action of parking.

So le mur du parking means the wall of the parking lot / garage, not the wall of parking.

This is a good example of a word borrowed from English but used a little differently in French.

Le mur means the wall, so it refers to a specific wall, probably the nearby wall of the parking area.

French often uses the definite article when the thing is identifiable from the situation. If someone is opening a car door in a parking garage, both speakers can easily understand which wall is meant.

If you said un mur, it would mean a wall, in a less specific way. Here, le mur sounds more natural because the wall is part of the immediate scene.