كل ما بتنقش الزهرية اكتر، كل ما صاحبتي بتحبها اكتر.

This pattern means the more ..., the more ....

So the sentence is built like this:

• كل ما
  • first clause = the more X happens
• كل ما
  • second clause = the more Y happens

It is a very common way in Egyptian Arabic to express a changing relationship between two things.

Yes, basically.

In Modern Standard Arabic, you will often see this written as كلما in one word. In Egyptian Arabic, people commonly write it as كل ما in two words. In this sentence, the meaning and function are the same.

Yes. That is another common use.

For example, a single كل ما can mean whenever / every time that. But when you see the repeated pattern كل ما ... كل ما ..., it usually means the more ..., the more ..., not just whenever.

So context and structure matter.

The subject is implied, not stated explicitly.

In Egyptian Arabic, بتنقش can mean:

• you engrave / you decorate (masculine singular)
• she engraves / she decorates

So by itself, it is ambiguous. Context tells you which one is meant. In this sentence, if the meaning shown to you is the more you decorate the vase..., then the hidden subject is you.

Also note:

• if speaking to a woman, you would usually say بتنقشي
• الزهرية is the object here, not the subject

In Egyptian Arabic, بـ on the verb usually marks the normal present/imperfect form.

So بتنقش means something like:

• you decorate
• you are decorating
• you tend to decorate

In a sentence like this, the present is used because it expresses a general relationship: whenever the amount of decorating increases, the amount of liking increases too. Arabic does not need a special form like English the more decorated here; the normal present form works fine.

الزهرية means the vase or the flower vase.

It has الـ, so literally it is definite: the vase, not a vase. That usually means the vase is specific or understood from context.

In everyday Egyptian, زهرية is a normal word for vase.

اكتر means more.

It is the Egyptian Arabic form of أكثر. In this sentence, it appears in both clauses because both sides are being compared:

• بتنقش الزهرية اكتر = you decorate the vase more
• صاحبتي بتحبها اكتر = my friend likes it more

So اكتر is what gives the comparative sense in each half.

صاحبتي means my female friend or, depending on context, my girlfriend.

It is made of:

• صاحبة / صاحبة in colloquial form = female friend
• -ي = my

So صاحبتي literally means my female friend.

The exact English translation depends on context. In many situations it just means my friend if the friend is female.

The -ها is an attached object pronoun meaning her / it.

Here it refers back to الزهرية, which is a feminine noun in Arabic. So instead of saying the full noun again, Egyptian Arabic attaches the object pronoun directly to the verb:

• بتحب = she likes
• بتحبها = she likes it

This is very normal Arabic structure. Where English often uses a separate word like it, Arabic often attaches it to the verb.

A natural Egyptian-style pronunciation would be approximately:

koll ma bitnaʔʔish ez-zohreyya aktar, koll ma saḥbti bitḥebbaha aktar

A few useful notes:

• كل is pronounced roughly koll
• الزهرية is pronounced with an assimilated الـ, so it sounds like ez-z..., not al-z...
• ق in many Egyptian words can sound like a glottal stop ʔ
• صاحبتي is often said quickly as saḥbti

So if you say it smoothly, it will sound something like:

koll ma bitnaʔʔish ez-zohreyya aktar, koll ma saḥbti bitḥebbaha aktar