אם לא תמהרי, תהיי רגועה יותר, ואני אהיה מוכן לעזור לך בדרך.

Because the sentence is addressed to one female person.

• תמהרי = you (feminine singular) will hurry
• תהיי = you (feminine singular) will be
• רגועה = calm/relaxed in the feminine singular form

Hebrew verbs in the future tense, and adjectives too, often show the gender of the person being addressed.

If you were speaking to a man, you would say:

אם לא תמהר, תהיה רגוע יותר...

That is a very common question for English speakers.

In Hebrew, when talking about a real future possibility, it is very normal to use the future tense in both parts of the sentence:

• אם לא תמהרי = if you do not hurry
• תהיי רגועה יותר = you will be calmer

So Hebrew does not follow the same tense pattern as English here.
English says:

• If you don't hurry, you'll...

Hebrew naturally says:

• אם לא תמהרי, תהיי...

So this is not strange or overly literal in Hebrew; it is standard.

תמהרי comes from the verb למהר, which means to hurry or to be in a hurry.

Here it is:

• למהר = to hurry
• תמהרי = you (feminine singular) will hurry

Some related forms:

• אני אמהר = I will hurry
• אתה תמהר = you (masculine singular) will hurry
• את תמהרי = you (feminine singular) will hurry
• הוא ימהר = he will hurry

So the ת- at the beginning is part of the future-tense pattern.

Because Hebrew often drops subject pronouns when the verb already makes the subject clear.

For example:

• תמהרי already means you (feminine singular) will hurry
• תהיי already means you (feminine singular) will be

So adding את is usually unnecessary unless you want emphasis or contrast.

Compare:

• אם לא תמהרי... = normal, natural
• אם את לא תמהרי... = also possible, but more explicitly emphasizes you

English usually needs the pronoun, but Hebrew often does not.

Both are future forms of the verb להיות = to be.

• תהיי = you (feminine singular) will be
• אהיה = I will be

So in this sentence:

• תהיי רגועה יותר = you will be calmer
• ואני אהיה מוכן = and I will be ready

The subject changes from you to I, so the form of to be changes too.

Because מוכן agrees with the speaker, not with the person being addressed.

In ואני אהיה מוכן:

• אהיה = I will be
• מוכן = ready in the masculine singular form

That means the speaker is male.

If the speaker were female, it would be:

• ואני אהיה מוכנה

So in this one sentence:

• רגועה matches you (female addressee)
• מוכן matches I (male speaker)

Because Hebrew is describing the person’s state, not the manner of an action.

• רגועה = calm / relaxed
• תהיי רגועה יותר = you will be calmer / more relaxed

This is very natural Hebrew. It means the person herself will be in a calmer state.

English might sometimes use an adverb like more calmly, but here Hebrew prefers the adjective with to be.

Also, יותר means more, so:

• רגועה יותר = more calm / calmer

In this sentence, רגועה יותר is a very natural way to say calmer / more relaxed.

• רגועה יותר = calm + more

Hebrew often forms comparisons with יותר.

You may also hear יותר רגועה, especially in spoken Hebrew, but רגועה יותר is very common and often feels a bit smoother or more standard in this kind of sentence.

So the main thing to remember is:

• יותר = more
• רגועה יותר = calmer / more relaxed

Because the verb לעזור = to help normally takes ל- in Hebrew.

So Hebrew thinks of it as:

• to help to someone

Examples:

• לעזור לי = to help me
• לעזור לך = to help you
• לעזור לו = to help him
• לעזור לה = to help her

So standard Hebrew says:

• אני אעזור לך
• אני מוכן לעזור לך

not:

• לעזור אותך

That direct-object pattern sounds wrong in standard Hebrew.

Here לך means to you.

A useful detail: the spelling לך can represent both masculine and feminine you, but the pronunciation changes.

• to you (masculine singular) = lecha
• to you (feminine singular) = lach

Since the sentence is addressed to a woman, here it is pronounced:

• lach

So:

• לעזור לך = to help you
• pronunciation here: la-azor lach

בדרך means something like:

• on the way
• along the way
• during the journey

It is made from:

• ב = in / on / at
• הדרך = the way / the road / the path

When certain prepositions combine with ה (the), Hebrew usually merges them into one word. So:

• ב + הדרך becomes בדרך

This is very common in Hebrew:

• בבית = in the house
• בדרך = on the way

So even though it looks like one word, it really contains both the preposition and the definite noun.

It could definitely just say ואהיה מוכן.

Hebrew often leaves out subject pronouns when the verb already tells you who the subject is. So both are possible:

• ואני אהיה מוכן לעזור לך בדרך
• ואהיה מוכן לעזור לך בדרך

Adding אני gives a little more emphasis, something like:

• and I will be ready...
• and as for me, I will be ready...

So אני is not required, but it can make the sentence feel slightly more explicit or emphatic.

You would change the forms that refer to you into masculine singular:

אם לא תמהר, תהיה רגוע יותר, ואני אהיה מוכן לעזור לך בדרך.

Changes:

• תמהרי → תמהר
• תהיי → תהיה
• רגועה → רגוע

If the speaker were also female, then you would also change:

• מוכן → מוכנה

So Hebrew keeps adjusting the forms to match the gender of the people involved.