היא הרימה את הנוצה והסתכלה על השמיים עוד כמה שניות.

A natural pronunciation is:

Hi heríma et ha-nótsa ve-histaklá al ha-shamáyim od káma shniyót.

A rough stress guide:

• היא — hi
• הרימה — he-RI-ma
• את — et
• הנוצה — ha-NO-tsa
• והסתכלה — ve-his-ta-KLA
• על — al
• השמיים — ha-sha-MA-yim
• עוד כמה שניות — od KA-ma shni-YOT

Yes. Hebrew often drops subject pronouns when they are clear from the verb form.

So both of these can work:

• היא הרימה את הנוצה...
• הרימה את הנוצה...

Because הרימה already tells you the subject is she in the past tense.

Including היא can:

• make the subject extra clear
• add a little emphasis
• sound more natural when introducing or reintroducing the person in the story

That -ה ending marks the third person feminine singular in the past tense.

So:

• הוא הרים = he lifted
• היא הרימה = she lifted

and

• הוא הסתכל = he looked
• היא הסתכלה = she looked

Since the subject is היא (she), both verbs have the feminine singular past form.

את is the Hebrew direct object marker. It usually has no English translation.

It appears before a definite direct object, such as a noun with ה־ (the).

Here:

• את הנוצה = the feather as the direct object of הרימה

So Hebrew says:

• הרימה את הנוצה

but not because את means the.
It just marks that הנוצה is the specific thing being lifted.

A useful comparison:

• היא הרימה נוצה = She lifted a feather
• היא הרימה את הנוצה = She lifted the feather

הרימה comes from להרים, which means to lift, to raise, or sometimes to pick up.

In this sentence, English could translate it as:

• lifted
• raised
• picked up

The best choice depends on context:

• if the feather was lying somewhere and she took it up, picked up is natural
• if she already had it and moved it upward, lifted or raised fits better

So הרימה is broader than just one fixed English verb.

In Hebrew, ו־ is the word and, and it attaches directly to the following word as a prefix.

So:

• ו = and
• והסתכלה = and she looked

This is completely normal in Hebrew.
You will see this all the time:

• וילד = and a boy
• והיא = and she
• והסתכלה = and she looked

Yes, על often means on, but after certain verbs it can mean at or toward.

With להסתכל, Hebrew normally says:

• להסתכל על משהו = to look at something

So here:

• הסתכלה על השמיים = she looked at the sky

This is just the standard preposition used with that verb.

Also, להסתכל is more like to look / to gaze, while לראות means to see. So:

• היא ראתה את השמיים = She saw the sky
• היא הסתכלה על השמיים = She looked at the sky

Yes. שמיים looks like a plural form, and historically it is a plural-form noun. But in modern Hebrew it usually means the sky as a single idea, or sometimes the heavens.

So even though it looks plural, English often translates it as singular:

• השמיים = the sky

This is one of those nouns you just get used to as a set form.

It means for a few more seconds or for a few additional seconds.

Breaking it down:

• עוד = more / another / still
• כמה = a few / some / how many
  Here it means a few
• שניות = seconds

So literally it is something like:

• a few more seconds

In context, it means she continued looking for that amount of time.

Because Hebrew often expresses duration without a word equivalent to English for.

So Hebrew can say:

• חיכיתי שעה = I waited for an hour
• ישן שתי דקות = He slept for two minutes
• הסתכלה על השמיים עוד כמה שניות = She looked at the sky for a few more seconds

This is very normal Hebrew structure.
English often needs for, but Hebrew often does not.

The sentence as written is very natural:

היא הרימה את הנוצה והסתכלה על השמיים עוד כמה שניות.

Hebrew word order is somewhat flexible, but changing it can shift the emphasis.

For example:

• היא הרימה את הנוצה והסתכלה על השמיים עוד כמה שניות.
  Neutral storytelling order.

• עוד כמה שניות היא הסתכלה על השמיים.
  Puts more focus on the time phrase.

• את הנוצה היא הרימה...
  Emphasizes the feather.

So the original version is the most straightforward narrative wording.