I dunno, she restrained her self for 92 years... I'm impressed.
We don't know this for sure. This may not be the first case of her immaturity regarding this sort of thing, but rather, a sensational, unique news story, one that garners disproportional attention to the action, when taken into context. Jealousy is everywhere, and when it infects a person, it can lead to a plethora of rash actions.