Does GL knows for himself how he's going to handle that? Perhaps she doesn't day and a sentence in ROTJ would give the final shot:
Luke: "Do you remember your mother, your REAL mother?"
Leia: "I don't know much about her; she died when I was very little."
So perhaps we don't see her dying, but ROTJ gives the solution
Leia did not say that her REAL mother was Padme.
Think about it. Who Leia thinks is her real mother could be Bail Organa's wife. Not necessarily Padme.
If Padme married Anakin, her name would be Padme Amidala Skywalker. Wouldn't Leia get suss if her Mother was Skywalker and her Father, Organa? YES. Would she also not get suss when Luke announces himself as "Luke SKYWALKER", the same name as her Mother? YES.
Heres what I think. Ben & Yoda know the crack with the prophecy (Luke will sort it out. Leia won't). Ben takes Leia and gives her to the Organas who adopt her as their daughter and keeps her out of Vader and the Emperor's mind. With Leia out of harm's way forever (or so he thinks), he then takes himself and Luke to Tattoine where he goes into hiding, waiting for the time when Luke is ready.
Of course if Padme marries Bail Organa after Anakin, my theory is wrong so.....
Think about the series, in I-VI order, the way it will be intended. Now, you've just finished III, and now are watching IV. Where is Padme? What happened to her? Will we wait until VI to hear a two sentence explanation?
Of course not. Padme must either die or be chronically ill at the end of episode III.
kj: destroying the pod of Sebulba, his agression with a greedo-type (cut from the movie), in the end battle with his ship: after he destroyed the control ship he flew away and so a battledroid, wich could be very easily avoided got cut in 2. AND every kid that has the shaddow of Vader in the movie is very bad 😂
djv: Leia was adopted, if you are adopted your last name changes to the family that you now belong. "She died when I was very little" She can't remember the name because she was too small to remember. But she knows something from the time before her adoption about a sad woman who was her mother. Otherwhise Luke wouldn't have asked about her mother, her real mother. (the word real is important here)
j212g: But not giving away she died, this could be than a major shock for ROTJ, but I still hope EpIII will be for an older public then EpI so you can see her die.