Vinkona mín styður mig alltaf, og stuðningurinn hennar hjálpar mér að vera róleg.

Yes. Vinkona means female friend. It is a feminine noun.

A few useful comparisons:

• vinkona = female friend
• vinur = male friend / friend
• kærasta = girlfriend, in the romantic sense

So vinkona mín is not normally understood as my girlfriend in the romantic sense. It usually just means my female friend.

Both are possible, but vinkona mín is the more neutral and very common way to say my female friend.

Putting the possessive first, mín vinkona, usually adds emphasis or contrast, something like:

• my friend
• it is my friend who...

So in ordinary statements, noun + possessive is often the most natural pattern:

• vinkona mín
• maðurinn minn
• bókin mín

Because Icelandic possessives must agree with the noun they describe in gender, number, and case.

Here:

• vinkona is feminine
• singular
• nominative

So the correct form is mín.

Compare:

• masculine: minn
• feminine: mín
• neuter: mitt

For example:

• vinur minn
• vinkona mín
• barn mitt

Styður is the present tense, 3rd person singular form of the verb styðja, meaning to support.

It is styður because the subject is singular:

• vinkona mín = one person

So:

• ég styð = I support
• þú styður = you support
• hann/hún styður = he/she supports

In this sentence, vinkona mín styður... means that she supports...

Because styðja takes a direct object in the accusative case.

The pronoun forms are:

• ég = I
• mig = me
• mér = to me / for me

Since I am the object of supports, Icelandic uses mig:

• Hún styður mig = She supports me

So this is a case-governed form: styðja + accusative.

Alltaf is an adverb meaning always.

Its placement is fairly natural here after the object:

• Vinkona mín styður mig alltaf

That word order sounds normal and clear. Icelandic word order is somewhat flexible, but not completely free. In ordinary speech and writing, this placement works very well.

It helps to think of it as:

• subject: vinkona mín
• verb: styður
• object: mig
• adverb: alltaf

Stuðningurinn is the definite form of stuðningur, which means support.

So:

• stuðningur = support
• stuðningurinn = the support

Icelandic usually adds the definite article to the end of the noun instead of using a separate word like English the.

Here the noun is masculine singular nominative, and the definite ending appears as -inn, giving the full form stuðningurinn.

So the word is basically:

• stuðningur
  • definite article = stuðningurinn

Hennar means her, and it is placed after the noun.

So:

• stuðningurinn hennar = her support / the support she gives

This kind of word order is very common in Icelandic, especially with hans, hennar, þeirra, and similar possessive forms.

Compare:

• bíllinn hennar = her car
• húsið hans = his house
• vinir þeirra = their friends

This is slightly different from mín in vinkona mín, because mín belongs to a different possessive pattern.

Because the verb hjálpa takes the dative case.

So with pronouns:

• ég = I
• mig = me
• mér = to me / me in dative

Since hjálpa governs the dative, Icelandic says:

• hjálpa mér = help me
• hjálpa honum = help him
• hjálpa henni = help her

So this is another case pattern you just have to learn with the verb:

• hjálpa + dative

It introduces an infinitive phrase.

The pattern is:

• hjálpa einhverjum að + infinitive

That means:

• help someone to do something

So:

• hjálpar mér að vera... = helps me to be...

Here:

• að = infinitive marker, like English to
• vera = be

So the structure is very normal Icelandic:

• hjálpar mér að vera róleg

Because after vera you use an adjective, not an adverb.

• róleg = calm, as an adjective
• rólega = calmly, as an adverb

In English, we say be calm, not be calmly. Icelandic works the same way:

• vera róleg = be calm

So rólega would be wrong here.

Because the adjective agrees with the person who is being calm.

The phrase means to be calm, and the implied subject is I. Since the speaker is female here, the adjective is feminine:

• róleg = feminine singular
• rólegur = masculine singular

So:

• female speaker: að vera róleg
• male speaker: að vera rólegur

This agreement is very important in Icelandic. Predicate adjectives after vera must match the person or thing being described.

Not directly. Even though mér is dative, róleg is not agreeing with the dative pronoun as an object of hjálpar. It agrees with the understood subject of vera, which is still ég.

So the logic is:

• hjálpar mér = helps me
• að vera róleg = to be calm

The person being calm is the same person as me, but inside the infinitive phrase the understood subject is really I.

That is why the adjective is chosen based on the speaker's gender, not because mér is dative.