صديقتي نسيت نظاراتها بالبيت.

Something like sadee'ti nisyit nazzārāta bil-bēt.

A few notes:

• صديقتي often sounds like sadee'ti in urban Levantine, where ق becomes a glottal stop.
• نسيت here is often pronounced nisyit or nisyet.
• بالبيت is commonly bil-bēt.

Exact pronunciation varies by region, so small differences are completely normal.

صديقتي means my female friend.

It breaks down like this:

• صديقة = female friend
• -ي = my

So صديقتي is literally my friend when the friend is female.

Yes, it can, depending on context.

Literally, it just means my female friend, but in real life it can also be understood as my girlfriend. Context usually makes it clear:

• who is speaking
• who they are talking about
• the situation

So this word can be a little ambiguous.

That is a very common question.

In unvowelled Arabic writing, نسيت can represent both:

• I forgot
• she forgot

In actual speech, they are often pronounced differently:

• I forgot → often nseet / nsiit
• she forgot → often nisyit / nisyet

In this sentence, the subject صديقتي makes it clear that the meaning is my friend forgot.

نظاراتها means her glasses.

It breaks down as:

• نظارات = glasses
• -ها = her

Arabic often attaches possessive pronouns directly to the noun, so instead of saying a separate word for her, it gets added to the end.

Compare:

• نظاراتي = my glasses
• نظاراته = his glasses
• نظاراتها = her glasses

Because Arabic commonly treats glasses as a plural noun here.

So even if you mean one pair, نظارات is very natural. Arabic does not need to copy the English expression a pair of.

Some speakers also use نظارة for a pair of glasses, but نظارات is very common and natural.

In Levantine, بـ very often means in or at.

So:

• بالبيت = in the house / at home

This is very natural in everyday speech.
في البيت is also understandable, but بالبيت sounds more colloquial and more naturally Levantine in many contexts.

Literally, البيت means the house.

But in this sentence, بالبيت is usually understood as at home. So the most natural English translation is usually at home, not necessarily in the house.

Yes, this word order is very natural in Levantine:

• صديقتي نسيت نظاراتها بالبيت

Subject-first word order is extremely common in everyday speech.

You can sometimes put the verb first, but here subject-first sounds very normal and also helps avoid confusion, because نسيت by itself could initially sound like I forgot until the listener hears the subject.

Yes.

In everyday Levantine, speakers do not use the full case-ending system you learn in MSA, such as final -u, -a, or -i on nouns.

So a dialect sentence like this is written much more like normal speech:

• no case endings
• no formal pauses or inflections
• everyday colloquial prepositions like بـ

That is one reason the sentence looks simpler than a fully formal MSA sentence.

Not always very strongly.

In careful speech, you can pronounce it clearly as -ha.
But in fast Levantine speech, this h often becomes weak, especially after a vowel, so نظاراتها may sound closer to nazzārāta.

As a learner, pronouncing it clearly is perfectly fine and easy to understand.