Её обида прошла, когда она услышала искренние слова подруги.

Её here is a possessive pronoun, meaning her.

In Russian, её can mean:

• her (possessive): её книга = her book
• her (object form): я вижу её = I see her

In её обида, it is possessive: her hurt / her resentment / her offense.

A useful point: её does not change form for gender, number, or case when it means possession.

Examples:

• её подруга = her friend
• её слова = her words
• её обида = her hurt / resentment

Not exactly. Обида often means:

• hurt feelings
• resentment
• feeling offended
• a sense of being hurt by someone’s words or actions

So обида is often more emotional and personal than the English word offense.

Depending on context, её обида прошла could be understood as:

• her hurt went away
• her resentment passed
• she got over being offended

So it is less about a formal offense and more about an emotional state.

Yes. Пройти literally means to pass, to go by, or to go through, but it is also very commonly used with things like feelings, pain, illness, fear, anger, etc.

So:

• боль прошла = the pain went away
• страх прошёл = the fear passed
• обида прошла = the hurt/resentment went away

This is a very natural Russian way to express that a feeling ended.

Also, прошла is:

• past tense
• feminine singular

It is feminine because обида is a feminine noun.

In the past tense, Russian verbs agree with the subject in gender and number.

The subject here is обида, which is:

• singular
• feminine

So the verb must be прошла.

Compare:

• обида прошла — resentment passed
• чувство прошло — the feeling passed (чувство is neuter)
• гнев прошёл — anger passed (гнев is masculine)
• сомнения прошли — the doubts passed (plural)

This is about aspect.

• слышать / слышала = to hear, to be hearing, to hear in general
• услышать / услышала = to hear something successfully, to catch/hear it as a completed event

In this sentence, the idea is that once she heard the sincere words, her resentment passed. That is a completed event, so Russian uses the perfective verb услышала.

Compare:

• Когда она услышала эти слова, её обида прошла.
  = When she heard those words, her hurt passed.
• Она слышала его голос весь вечер.
  = She was hearing / could hear his voice all evening.

So услышала is the natural choice for a one-time event that triggered a result.

Искренние слова is accusative plural, because it is the direct object of услышала.

Why does it look the same as nominative plural?

Because with inanimate plural nouns, the accusative plural usually looks the same as the nominative plural.

Here:

• слова = words
• nominative plural: искренние слова
• accusative plural: искренние слова

The adjective искренние agrees with слова in:

• number: plural
• gender: not relevant in plural
• case: accusative plural

So:

• она услышала искренние слова = she heard sincere words

Подруги is genitive singular of подруга.

Here it means:

• the friend’s words
• literally: words of [her] female friend

So искренние слова подруги = the sincere words of her friend

This is a very common Russian structure:

• книга брата = the brother’s book
• голос мамы = mom’s voice
• совет учителя = the teacher’s advice
• слова подруги = the friend’s words

A learner might want to translate this word-for-word as words of the friend, but in natural English it is usually her friend’s words or the words of her friend.

Yes. Подруга means a female friend.

Russian distinguishes:

• друг = male friend / friend (masculine)
• подруга = female friend

So слова подруги clearly means the words of her female friend.

This is one of those places where Russian gives more gender information than English normally does.

In most contexts, yes: она would naturally refer to the same woman whose resentment is being discussed.

So the sentence is most naturally understood as:

• Her resentment passed when she heard her friend’s sincere words.

However, purely grammatically, Russian does not force that interpretation by itself. In theory, context could make она refer to another woman. For example, a larger story could make it clear that one woman’s resentment passed when another woman heard the friend’s words.

But without special context, readers will normally assume:

• её = the woman whose resentment it was
• она = that same woman

Because когда она услышала искренние слова подруги is a subordinate clause.

Russian normally puts a comma before subordinate clauses introduced by words like:

• когда = when
• если = if
• потому что = because
• что = that

So:

• Её обида прошла, когда она услышала искренние слова подруги.

This is standard Russian punctuation.

Yes. Russian word order is fairly flexible, although different orders can sound more neutral, more emphatic, or more literary.

The given sentence is neutral and natural:

• Её обида прошла, когда она услышала искренние слова подруги.

Possible variations:

• Когда она услышала искренние слова подруги, её обида прошла.
  This puts more focus on the time/event first: When she heard...
• Искренние слова подруги она услышала, и её обида прошла.
  Possible, but less neutral and more stylistically marked.

So the original version is a very normal, natural way to say it.