It might be an interesting twist to have notPadme an unwitting Lady Macbeth.
If Anakin was initially shown as being without any ambition or desire to be more than just a navigator on a spice freighter, she could be constantly pushing him to be more than that (only with good intentions not Lady Macbeth's poison).
As Anakin becomes more confident and takes on a more active role she continues to push him to achieve greater and greater things with terrible consequences.
The sadness that Leia remembers comes not just from her husband's fall but from her part in it.