صاحبتي نسيت المظلة في البيت، فرجعت عشان كان فيه مطر.

Yes. صاحبتي usually means my female friend, but depending on context it can also mean my girlfriend.

A useful breakdown is:

• صاحبة = a female friend / companion
• -ي = my

With feminine nouns, the t sound shows up before possessive endings, so you get صاحبتي rather than just صاحبي.

In everyday Egyptian speech, the exact meaning depends on context:

• casual context: my friend
• romantic context: my girlfriend

This is a very common learner question, because Arabic writing usually does not show short vowels.

So the written form نسيت can look ambiguous by itself. But here, the subject صاحبتي comes first, so the listener understands the verb as she forgot.

In speech, the different meanings are usually clearer from pronunciation and context. The same thing also applies later with رجعت.

So in this sentence:

• صاحبتي نسيت = my friend forgot not
• I forgot

Because Arabic does not need a subject pronoun when the subject is already clear.

Here, صاحبتي already tells you who did the action. After that, the sentence just continues with the same subject:

• صاحبتي نسيت...
• فرجعت...

In English, we often repeat the subject more. In Egyptian Arabic, repeating هي here would usually sound unnecessary unless you want emphasis or contrast.

Because subject + verb order is very common in Egyptian Arabic, especially in everyday speech.

So:

• صاحبتي نسيت... = very natural in conversation

In more formal Arabic, verb-first order is also common, but in spoken Egyptian, starting with the subject is often the most natural choice.

Because both nouns are definite here:

• المظلة = the umbrella
• البيت = the house / the home

In this sentence, the speaker is talking about a specific umbrella, not just any umbrella.

Also, Arabic often uses البيت where English would simply say home. So في البيت can naturally mean at home, even though the Arabic literally has the house.

It can mean either one, depending on context.

Here, في البيت most naturally means at home or back at the house.

Arabic uses في in places where English may choose either:

• in
• at

So learners should not always translate في too literally.

The فـ is a connector. Here it means something like:

• so
• then
• and so

So:

• رجعت = she went back / returned
• فرجعت = so she went back

It links the two events together and shows that the second one follows from the first situation.

عشان is one of the most common Egyptian words for expressing reason or purpose.

It can mean:

• because
• for
• so that / in order to

In this sentence, it means because:

• فرجعت عشان كان فيه مطر = so she went back because there was rain

This is very natural everyday Egyptian. A more formal word like لأن is possible in some contexts, but عشان is much more conversational.

Here, فيه means there is / there are.

So:

• فيه مطر = there is rain
• كان فيه مطر = there was rain

This is called the existential use of فيه.

You are right that the same spelling can also mean in it / in him, but here the meaning is clearly existential because it is followed by a noun phrase: مطر.

Because كان puts the situation in the past.

Compare:

• فيه مطر = there is rain / it is raining
• كان فيه مطر = there was rain / it was raining

Since the whole story is in the past:

• she forgot
• she went back

the rain also needs to be framed as a past situation, so كان is the natural choice.

Yes. Very often, that is the most natural English translation.

Literally, كان فيه مطر is closer to there was rain, but in normal English we often say:

• it was raining

So even if the structure is different from English, the meaning works very well that way.

Yes. For example, a speaker might also say:

• صاحبتي نسيت المظلة في البيت، فرجعت عشان الدنيا كانت بتمطر.

That version is closer to My friend forgot the umbrella at home, so she went back because it was raining.

The original sentence is still completely natural. كان فيه مطر is just a simple, common way to express the idea.

A simple approximate pronunciation is:

saḥbti nesyet el-mazalla fil-bēt, farigiʿit ʿashān kān fīh maṭar

A few quick notes:

• ḥ is a stronger, breathier h
• ʿ is the sound of ع
• j / g in Egyptian Arabic is usually pronounced like g in go
• el- is the Egyptian pronunciation of الـ in many cases

You do not need a perfect accent at first; getting the rhythm and sentence flow right is more important.