वह बाहर गरज सुनती है।

Yes—वह is ambiguous by itself. It can mean:

• he
• she
• that

Hindi third-person pronouns do not usually mark gender the way English pronouns do. In this sentence, the verb form सुनती shows that the subject is feminine, so here वह is understood as she.

If the subject were masculine, you would normally get:

• वह बाहर गरज सुनता है। = He hears thunder outside.

So the verb helps you decide whether वह is he or she.

Because सुनती agrees with a feminine singular subject.

Here the subject is वह = she, so the verb uses the feminine singular habitual form:

• सुनता है = masculine singular
• सुनती है = feminine singular

So:

• वह सुनता है = he hears
• वह सुनती है = she hears

This is one of the main ways Hindi shows gender in a sentence.

है is the present-tense form of to be, and in sentences like this it helps form the habitual present.

So:

• सुनती = hearing / hears (habitual stem with gender marking)
• सुनती है = he/she hears, is in the habit of hearing, or sometimes just the normal present hears

Together, सुनती है is the standard way to say she hears in Hindi.

In Hindi, many verb forms are built with:

1. a main verb form, and
2. a helping verb

Here:

• सुनती = main part
• है = helping verb

This is very normal in Hindi. English also sometimes does something similar:

• is hearing
• has heard
• will hear

So सुनती है is not unusual—it is just how Hindi forms this present-type expression.

बाहर means outside.

In this sentence, it comes before the object and verb:

• वह बाहर गरज सुनती है।

Hindi word order is flexible, but a very common pattern is:

Subject + adverb/place word + object + verb

So this sentence literally looks like:

• she + outside + thunder + hears

Natural English reorders that as:

• She hears thunder outside.

Usually it is understood as part of the overall situation: she hears thunder outside / she hears the thunder coming from outside.

Hindi often leaves this kind of relationship less explicitly marked than English does, and context decides the most natural interpretation.

So in practice, an English speaker will usually understand:

• She hears thunder outside or
• She hears thunder from outside

Both are close in sense.

गरज can mean thunder, rumbling, roar, or peal, depending on context.

In a sentence like this, especially with सुनती है, it is very naturally understood as thunder or the sound of thunder.

So:

• गरज सुनती है = hears thunder / hears the rumbling

Context always helps choose the best English translation.

Because गरज is the direct object of सुनना (to hear), and direct objects in Hindi often appear without को, especially when they are non-human and general.

So:

• वह गरज सुनती है। = She hears thunder.

Using को here would sound unnatural in most ordinary contexts.

As a rough guideline:

• human/specific objects are more likely to take को
• non-human/general things often do not

Since गरज is a non-human thing/sound, no को is needed.

Hindi does not have articles like English a and the.

So गरज can mean:

• thunder
• the thunder
• sometimes a thunderous sound

You choose the best English article from context.

That is why Hindi sentences often look shorter than English ones.

Grammatically, सुनती है is the habitual present form. Very often, that means something like:

• she hears
• she usually hears
• she does hear

Depending on context, English may translate it simply as a present statement. If you want to stress an action happening right now, Hindi often uses a progressive form:

• वह बाहर गरज सुन रही है। = She is hearing thunder outside / She can hear thunder outside right now.

So your sentence most naturally reads as a simple present statement, though context may make it feel immediate.

The basic Hindi pattern is usually:

Subject + Object/Other information + Verb

Here that gives:

• वह = subject
• बाहर = adverb/place word
• गरज = object
• सुनती है = verb

So the sentence follows a very normal Hindi order.

Yes, Hindi word order can be changed for emphasis, but the standard neutral version is the one you have here.

The verb would change to agree appropriately.

Examples:

• वे बाहर गरज सुनते हैं। = They hear thunder outside. / He hears thunder outside (respectful, masculine context)
• वे बाहर गरज सुनती हैं। = They hear thunder outside. / She hears thunder outside (respectful, feminine context)

So you should watch not only the pronoun, but also the verb ending and the helping verb:

• सुनता है
• सुनती है
• सुनते हैं
• सुनती हैं

These together tell you number, gender, and sometimes level of respect.