Doctors say the stab victim's breast implant had just enough saline in it to stop the knife from piercing her chest.
The victim says her ex-fiancé's new girlfriend, Amy Winter, attacked her outside of his apartment, first scratching her car then turning the knife on her, stabbing her repeatedly in the left side of her chest.
Then she realized, the knife had punctured the implant and she was soaked with saline.
Doctors say the salt water and walls of the implant prevented a deadly blow.
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