Наша новая соседка очень дружелюбная, и с ней легко общаться.

Соседка means female neighbor. The masculine form is сосед.

In this sentence, the speaker is specifically talking about a woman, so Russian uses the feminine noun соседка. That also affects the adjectives around it, which all have to match it in gender.

• сосед = male neighbor
• соседка = female neighbor

Because соседка is feminine singular, the adjectives are feminine singular too:

• наша
• новая
• дружелюбная

They end in -ая because they are agreeing with соседка, which is:

• feminine
• singular
• nominative case

In Russian, adjectives and words like наш change their endings to match the noun they describe.

Here is the matching:

• наш → masculine
• наша → feminine
• наше → neuter
• наши → plural

And similarly:

• новый сосед

• новая соседка

• дружелюбный сосед
• дружелюбная соседка

So the endings are not random — they show agreement with соседка.

In the present tense, Russian usually omits the verb to be.

So:

• Наша новая соседка очень дружелюбная
  literally looks like Our new neighbor very friendly but it means Our new neighbor is very friendly.

This is completely normal in Russian. If you want to talk about the past or future, then forms of быть appear:

• Наша новая соседка была очень дружелюбной. = Our new neighbor was very friendly.
• Наша новая соседка будет очень дружелюбной. = Our new neighbor will be very friendly.

But in the present tense, there is usually no is/am/are.

Дружелюбная is the full adjective form, and that is the normal choice here.

In modern Russian, full adjective forms are commonly used after a noun to describe a permanent or general quality:

• Она дружелюбная. = She is friendly.
• Соседка очень дружелюбная. = The neighbor is very friendly.

Russian also has short adjective forms, but they are used more selectively and often sound more formal, literary, or stylistically marked depending on the adjective. For дружелюбный, the short form exists less commonly in everyday use, so дружелюбная is the natural form here.

Because the preposition с meaning with requires the instrumental case.

The pronoun она is the nominative form, meaning she. After с, you need the instrumental form:

• она = she
• с ней = with her

So:

• с она ❌
• с ней ✅

This is just like nouns changing after prepositions in Russian. Pronouns change too.

This is a special feature of Russian third-person pronouns after many prepositions.

Compare:

• она = she
• её = her
• ей = to her
• ею / ей = by her

But after a preposition, Russian often adds н:

• у неё = at her / she has
• к ней = toward her
• с ней = with her
• о ней = about her

So the н in ней is not extra by accident — it is a regular pattern with third-person pronouns after prepositions.

This is a very common Russian structure:

• легко = easily / easy
• общаться = to communicate, interact, socialize

Together, легко общаться means it is easy to communicate / interact / get along in conversation.

More literally, the structure is:

• с ней легко общаться = with her, [it is] easy to communicate

Russian often uses:

• an adverb or predicative word like легко, трудно, интересно, приятно
• plus an infinitive

Examples:

• Мне легко читать по-русски. = It is easy for me to read in Russian.
• Здесь приятно жить. = It is pleasant to live here.
• С ним трудно работать. = It is hard to work with him.

So there is no explicit it in Russian, but English usually adds it:

• С ней легко общаться. = It’s easy to talk to / interact with her.

This is a very useful distinction.

Говорить means to speak or to say. It focuses on speech itself.

Общаться is broader. It means to communicate, to interact, to socialize, or to have contact with someone.

So in this sentence:

• с ней легко общаться

does not just mean she talks easily It means more like:

• she is easy to talk to
• she is easy to get along with in conversation
• interaction with her feels natural and comfortable

Compare:

• Она хорошо говорит по-русски. = She speaks Russian well.
• С ней приятно общаться. = She is pleasant to interact with.

So общаться is the better word here because the sentence is about her personality and how comfortable she is to interact with.

The comma is there because the sentence has two parts:

1. Наша новая соседка очень дружелюбная
2. с ней легко общаться

They are connected by и = and.

Russian often uses a comma before и when it joins two clauses, especially when each part has its own predicate or forms a separate statement.

Here the first clause says:

• the neighbor is very friendly

The second says:

• it is easy to communicate with her

So the comma helps separate those two linked ideas.

Yes. Russian word order is more flexible than English, though the original version sounds natural and neutral:

• Наша новая соседка очень дружелюбная, и с ней легко общаться.

You could also hear variations such as:

• Новая наша соседка очень дружелюбная...
• С ней легко общаться, и наша новая соседка очень дружелюбная.

But those alternatives may sound less neutral or may shift emphasis.

The original order is natural because it first introduces the person:

• Наша новая соседка

then describes her:

• очень дружелюбная

then adds another comment:

• и с ней легко общаться

So while Russian allows flexibility, this version is a very standard and idiomatic way to say it.

It is closer to friendly.

Дружелюбный / дружелюбная describes someone who is warm, approachable, and positively disposed toward other people.

It is not exactly the same as добрый:

• дружелюбный = friendly
• добрый = kind

A person can be:

• добрый, но не очень дружелюбный = kind, but not very friendly
• дружелюбный, но не очень близкий = friendly, but not especially close

In this sentence, дружелюбная works well because it matches the second part:

• с ней легко общаться

Those two ideas support each other very naturally.