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The mother had a bad press from the start (Sun inconjunct Neptune in the natal chart) and was in a period of possible lost of freedom (SunSaturnUranus). It was a day with positions reflecting incidents or accidents (MarsUranus). She happened to share Mars-Uranus with her baby (the risk to share an accident). And the baby's chart had Sun square Saturn (it was a bad moment). One of the ways to read Sun-Saturn progressions or transits is: a period ending. Or life itself...The circumstances (a dingo hunting, a baby alone) did the rest.
When deaths (and in particular violent deaths) are mysterious the close family members often are forced to prove their innocence. And charts are no evidence. They show the issue of violent death in the charts of the killer, the victim and the persons involved, like mourning family members. Just check the label crime or criminality and you will see surprising examples. The latest was that of Casey Anthony.
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