kanozyo ha taityou ga warui toki, muri wo sinaide kazoku ni tayorukoto ni site iru.

は marks 彼女 as the topic of the sentence: as for her...

So 彼女は does not just mean she in a neutral grammatical sense. It sets up the sentence as being about her.

• 彼女は = as for her
• The rest of the sentence explains her usual behavior or habit

This is very common in Japanese, especially when giving general information about someone.

In 体調が悪い, が marks 体調 as the thing that is in the state of being bad.

So:

• 体調が悪い = one's physical condition is bad
• 体調は悪い would sound more contrastive, like as for her condition, it’s bad or her condition is bad, at least

In this sentence, が is the natural choice because 悪い describes 体調 directly.

体調 means physical condition, state of health, or how someone is feeling physically.

It is broader than just being sick.

For example, 体調が悪い could mean:

• feeling ill
• feeling weak
• not feeling well
• being in poor physical shape that day

It does not necessarily mean a diagnosed illness. It is often used for general physical wellbeing.

とき means when or at the time when.

Before とき, you use the plain form of the word that modifies it:

• verb plain form + とき
• い-adjective + とき
• な-adjective + なとき
• noun + のとき

So here:

• 悪い is an い-adjective
• 悪いとき = when it is bad
• 体調が悪いとき = when her physical condition is bad / when she is not feeling well

無理をする is a very common expression meaning:

• to overdo it
• to push oneself too hard
• to force oneself
• to do something unreasonable despite difficulty

In this sentence, 無理をしないで means without pushing herself too hard or more naturally instead of overexerting herself.

Even though 無理 by itself can mean unreasonable or impossible, the fixed phrase 無理をする has this special meaning of pushing oneself beyond what is healthy or realistic.

Here 〜ないで is being used to connect actions, with the sense of:

• without doing X, do Y
• instead of doing X, do Y

So:

• 無理をしないで家族に頼る = not pushing herself and relying on her family
• more naturally: instead of pushing herself, she relies on her family

By contrast, 〜なくて often has a different feel, such as:

• giving a reason
• describing a state
• sometimes linking events in a less intentional way

In this sentence, しないで is better because it emphasizes a deliberate choice not to do one action before doing the next.

Because 無理をする is a set expression, and 無理 functions as the object of する.

So:

• 無理 = unreasonable effort / strain
• 無理をする = to do that unreasonable effort, meaning to overdo it

This is one of many noun + をする patterns in Japanese.

The verb 頼る usually takes に, because it means to rely on or to depend on someone or something.

So:

• 家族に頼る = rely on her family

The particle に marks the target of reliance.

This is just the natural pattern for this verb, so it is best learned as:

• 人／もの に 頼る

ことにしている means to make it a rule to..., to have a habit of..., or to have decided as a regular practice to...

So:

• 頼ることにしている = she makes it a rule to rely on...
• in context: when she’s not feeling well, she makes it a rule not to push herself and to rely on her family

This is stronger than just saying she sometimes relies on them. It suggests an ongoing personal policy or habit.

This is an important distinction.

• ことにする = decide to do
• ことにしている = have decided to do and continue that as a rule/habit

So:

• 家族に頼ることにする = she decides to rely on her family
  • this can sound like a one-time decision
• 家族に頼ることにしている = she has made it her rule to rely on her family
  • this sounds ongoing and habitual

In this sentence, している shows that this is her regular practice whenever she is unwell.

Yes. That is the natural interpretation.

The structure is:

• 無理をしないで
• 家族に頼ることにしている

The しないで part connects to the main action and gives the sense:

• she does not push herself and instead relies on her family

So the overall idea is a paired habit:

1. she does not overexert herself
2. she depends on her family

Japanese often links actions this way without repeating the full decision structure for both parts.

Japanese often states the topic once and then leaves it understood for the rest of the sentence.

Here, 彼女は sets the topic at the beginning, so everything after that is understood to describe her unless something changes it.

So all of these are understood as her actions or states:

• 体調が悪い = her condition is bad
• 無理をしないで = she does not push herself
• 家族に頼ることにしている = she makes it a rule to rely on her family

This kind of omission is extremely common in Japanese.

Both are possible, but they are slightly different.

• 頼ることにしている = I have decided to rely on... / I make it a rule to rely on...
• 頼るようにしている = I try to rely on... / I make an effort to rely on...

So ことにしている sounds more like a firm personal policy. ようにしている sounds more like an ongoing effort or intention.

In this sentence, ことにしている gives the feeling that she has consciously set this as her rule when she is unwell.