بيت صديقتي بعيد عن الجامعة، فهي بتروح بالباص.

Because Arabic usually expresses possession with an iḍāfa structure, which is basically noun + possessor.

So بيت صديقتي means my friend’s house or literally house of my friend.

In this structure:

• the first noun (بيت) normally does not take الـ
• the whole phrase is definite because the second part is definite: صديقتي = my friend

So بيت صديقتي is already definite enough to mean my friend’s house.

صديقتي means my female friend.

Breakdown:

• صديقة = a female friend
• -ي = my

So:

• صديقي = my male friend
• صديقتي = my female friend

Since the sentence says صديقتي, the friend is female.

Because the feminine ending ة often turns into -ت- when another ending is attached.

So:

• صديقة
  becomes
• صديقتي

This is very common in Arabic.

More examples:

• جامعة → جامعتي = my university
• سيارة → سيارتي = my car

So the t is not random; it appears because the possessive ending is attached.

It is understandable and correct, but in everyday Levantine it can sound a little more formal or bookish than some other options.

In casual speech, many speakers would often say things like:

• صاحبتي
• sometimes رفيقتي in some regions

So this sentence is fine, but صديقتي is not the most colloquial choice possible.

Because بعيد describes بيت.

And بيت is a masculine singular noun, so the adjective must also be masculine singular:

• بيت ... بعيد = a house is far

It does not agree with صديقتي, because صديقتي is not the thing being described. The thing that is far is the house, not the friend.

If the noun were feminine, you would use بعيدة. For example:

• الجامعة بعيدة = the university is far

In Arabic, بعيد عن is the normal pattern for far from.

So:

• بعيد عن الجامعة = far from the university

You should learn بعيد عن as a chunk, just like English far from.

فهي is made of:

• فـ = so / therefore / then
• هي = she

So فهي means something like:

• so she
• therefore she

It connects the two ideas:

• her friend’s house is far from the university
• so she goes by bus

It also helps make the subject clear, because the first clause talks about the house, while the second clause talks about the friend.

Yes. In Levantine, that is very natural.

You could say:

• بيت صديقتي بعيد عن الجامعة، فبتروح بالباص.

Because the verb already tells you the subject, Arabic often drops the pronoun.

Adding هي can make it a bit clearer or slightly more emphatic, especially here because the subject changes from the house to she.

In Levantine Arabic, بـ on the verb usually marks the everyday present or habitual tense.

So:

• تروح = go
• بتروح = goes / usually goes / is going, depending on context

Here it most naturally means:

• she goes
• or she usually goes

So بتروح is a normal Levantine present-tense form.

It can mean more than one subject value, yes.

In Levantine, بتروح can mean:

• she goes
• you go (addressing one male)

Context tells you which one is meant.

In this sentence, because of هي, it clearly means:

• she goes

In this sentence, the best translation is goes or usually goes.

That is because the sentence describes a general situation:

• her house is far from the university
• so she goes by bus

So this is a habitual action, not one single trip happening right now.

Because Arabic often uses the preposition بـ with means of transport.

So:

• بالباص = by bus
• بالسيارة = by car
• بالقطار = by train

Literally, it can feel like with/on the bus, but idiomatically it means by bus.

Also, بالباص is a combination of:

• بـ = by / with
• الـ = the
• باص = bus

الجامعة has الـ because it means the university, probably a specific one known from context.

With transport words like الباص, Arabic often uses the definite article even where English does not.

So English says:

• by bus

but Arabic commonly says:

• بالباص

That is normal Arabic usage, not something you need to translate word-for-word.

A rough Levantine-style pronunciation would be:

Beit ṣadīʔti baʕīd ʕan il-jāmʕa, fa-hiyye btirūḥ bil-bāṣ.

A simpler learner-friendly version:

beit sadii'ti b3iid 3an il-jaam3a, fa hiyye btirooh bil-baas

Pronunciation varies by region, but that is a good general guide.