kanozyo ha nodo ga kawaite ita rasiku, tumetai otya wo hitokuti nonde sugu okawarisita.

は marks the overall topic: as for her...

Inside that topic, のどが渇いていた is the actual statement, and が marks the grammatical subject of 渇く.

Japanese uses the expression のどが渇く, literally the throat gets dry, to mean to be thirsty. So the structure is basically:

• 彼女は = as for her
• のどが渇いていた = her throat was dry / she was thirsty

This is very natural in Japanese, even though English would usually make she the subject of was thirsty.

Yes. Literally, のどが渇く means the throat becomes dry.

In normal Japanese, this is the standard way to say to be thirsty. So even though the literal image is different from English, learners should treat it as a very common set expression.

Related forms:

• のどが渇く = get thirsty
• のどが渇いている = be thirsty
• のどが渇いた = got thirsty / became thirsty
• のどが渇いていた = was thirsty

This is about the difference between a change and a state.

• 渇いた can sound like became thirsty or got dry
• 渇いていた describes the state as continuing in the past: was thirsty

With many verbs, -ている shows an ongoing state or the result of a change. Here, 渇いている means is thirsty, and 渇いていた means was thirsty at that time in the story.

So 渇いていたらしく suggests it seemed she was thirsty or apparently she had been thirsty.

Here, らしく comes from らしい, meaning apparently, it seems, or judging from the evidence.

So 渇いていたらしく means something like:

• apparently she was thirsty
• it seemed she was thirsty

This makes the statement less direct than simply saying she was thirsty. The speaker is probably inferring it from what happened next: she drank some cold tea and immediately wanted more.

Same form, different use.

For example:

• 彼女らしい = that’s like her / typical of her
• 本当らしい = it seems true
• 渇いていたらしい = apparently she was thirsty

In your sentence, らしい is attached to a verb phrase, 渇いていた, so it means apparently / it seems.

It does not mean in a way that is like her here.

Because らしい is being used to connect smoothly to the next clause.

The sentence is not stopping at 渇いていたらしい. It continues:

• 渇いていたらしく、
• 冷たいお茶を一口飲んで...

So らしい becomes らしく in order to link into what follows, roughly like:

• Apparently she was thirsty, and...
• It seemed she was thirsty, so...

You can think of らしく here as an adverbial/connecting form.

一口 means one mouthful or one sip.

So:

• 冷たいお茶を一口飲んで = drank one sip of cold tea and...

This is a very common kind of quantity expression in Japanese. It tells you how much of something was consumed.

A useful point: quantity words often appear near the verb in Japanese, so お茶を一口飲む is very natural.

Because 一口 here is measuring the action of drinking, not describing the tea itself as a noun phrase.

• お茶を一口飲む = drink one sip of tea

This is the natural pattern:

• object + を
• amount/quantity
• verb

By contrast, 一口のお茶 would sound like a sip-sized portion of tea, which is not what the sentence is focusing on.

飲んで is the -て form of 飲む. Here it links actions in sequence.

So:

• 冷たいお茶を一口飲んで
• すぐおかわりした

means:

• she took a sip of cold tea and then immediately got another serving

The subject does not need to be repeated. Japanese often uses the -て form to connect actions done by the same person in order.

おかわり means another helping, seconds, or a refill.

With する, it becomes a verb-like expression:

• おかわりする = have another helping / get a refill / ask for more

So すぐおかわりした means she immediately got another serving or asked for a refill.

It is a very common everyday word, especially for food and drinks.

Because it is obvious from context.

The sentence has just mentioned cold tea, so Japanese does not need to repeat お茶を again. The listener can easily understand that the おかわり is of the tea.

Japanese often leaves out information that is already clear. That omission is one reason natural Japanese can sound compact.

So the full idea is something like:

• she drank one sip of the cold tea and immediately got more of it

すぐ means immediately or right away.

Here it modifies おかわりした, so it tells you how quickly she got another serving:

• すぐおかわりした = immediately got a refill / asked for more right away

This gives a strong hint about her condition: she must have been pretty thirsty.

Because Japanese modifiers come before the noun they modify.

• 冷たい = cold
• お茶 = tea

So:

• 冷たいお茶 = cold tea

This part works very much like English word order in cold tea.

The comma marks a pause and helps separate the sentence into two parts:

• 渇いていたらしく、 = apparently she was thirsty,
• 冷たいお茶を一口飲んですぐおかわりした。 = she took a sip of cold tea and immediately got more.

Japanese commas are somewhat flexible, so this comma is mainly for readability and rhythm. It is very natural here, but punctuation in Japanese is not always as rigid as in English.