Sy skink melk oor haar eiers, maar ek gebruik net sout en peper.

Yes. Sy here means she.

A useful thing to know is that Afrikaans also has sy meaning his, but in this sentence sy skink clearly means she pours, because it comes before the verb and functions as the subject.

So in this sentence:

• Sy skink = She pours

Skink means to pour, especially when you pour a liquid.

So:

• Sy skink melk = She pours milk

Yes, it is a normal and useful verb in Afrikaans, especially for drinks or other liquids.

Examples:

• Ek skink tee. = I pour tea.
• Hy skink water in die glas. = He pours water into the glass.

Yes. Oor often means over.

In this sentence, melk oor haar eiers means she is pouring milk over her eggs.

So:

• oor = over
• melk oor haar eiers = milk over her eggs

Afrikaans often uses prepositions in ways very similar to English, and this is one of those cases.

Yes. Haar means her here.

So:

• haar eiers = her eggs

A beginner point to remember:

• haar can mean her
• sy can mean she or sometimes his, depending on the sentence

In this sentence there is no real confusion:

• Sy = she
• haar eiers = her eggs

Afrikaans does have a definite article, die, which means the, but it is not always used where English might use it.

Here the sentence is talking about milk and eggs in a general or natural way:

• Sy skink melk oor haar eiers = She pours milk over her eggs

Not saying die melk or die eiers is completely normal.

Compare:

• Sy drink water. = She drinks water.
• Hy eet brood. = He eats bread.

If you said die melk, that would sound more like a specific, identifiable milk: the milk.

Afrikaans is a verb-second language in main clauses. That means the finite verb usually comes early in the sentence, typically in the second main position.

So:

• Sy skink melk oor haar eiers
• ek gebruik net sout en peper

This pattern is very common:

• subject + verb + rest

Examples:

• Ek eet brood. = I eat bread.
• Hy drink koffie. = He drinks coffee.

With maar joining two main clauses, each clause keeps its normal word order:

• Sy skink ...
• maar ek gebruik ...

Maar means but, and in this sentence it works just like English but.

So:

• ..., maar ek gebruik net sout en peper.
• ..., but I only use salt and pepper.

It links two contrasting ideas:

• she uses milk
• I use only salt and pepper

Gebruik means use.

Afrikaans verbs are much simpler than English verbs because they usually do not change according to the subject.

So:

• ek gebruik = I use
• jy gebruik = you use
• hy gebruik = he uses
• ons gebruik = we use

Unlike English, there is no extra -s for he/she/it uses.

That is why gebruik stays the same.

Here net means only, though in many contexts it can also be translated as just.

So:

• ek gebruik net sout en peper = I use only salt and pepper

In everyday English, just might sound natural too:

• I just use salt and pepper

So net is a very common word with a range that overlaps with both only and just.

In this sentence, the natural meaning is:

• I only use salt and pepper

That is, those are the only things I use.

Like English, placement of only-type words can sometimes be a little flexible in real usage, but here the intended meaning is very clear:

• net limits sout en peper

So the contrast is:

• she pours milk over her eggs
• I use only salt and pepper

Because Afrikaans often leaves out articles when talking about ingredients or substances in a general sense.

So:

• sout en peper = salt and pepper

This is very natural, just like English often says:

• I use salt and pepper not necessarily
• I use the salt and the pepper

Other examples:

• Ek drink koffie. = I drink coffee.
• Sy koop brood en kaas. = She buys bread and cheese.

Yes.

• eier = egg
• eiers = eggs

Adding -s is a common way to form plurals in Afrikaans.

So:

• haar eiers = her eggs

Very roughly, word for word it is:

• Sy = she
• skink = pours
• melk = milk
• oor = over
• haar = her
• eiers = eggs
• maar = but
• ek = I
• gebruik = use
• net = only/just
• sout = salt
• en = and
• peper = pepper

So the full sentence is:

• She pours milk over her eggs, but I use only salt and pepper.

A few small ones:

• sy can be confusing because it can mean she, and in other contexts there is also a possessive use related to his
• net does not mean the internet net; it usually means only or just
• oor often means over, but like many prepositions, it can have several uses in different contexts
• gebruik may look formal to an English speaker, but it is an ordinary everyday verb meaning use

So while the sentence is fairly straightforward, those are the words learners often pause at first.