Almost any murder between people who know each other well ends up as overkill in the number of wounds.
True, but the lesbian murders seemed to go way beyond overkill. It was the release of an unbelievable amount of rage. 222 stab wounds is not surprising. In contrast, I recall a case where a jilted male suitor killed his victim with 55 stab wounds. Excessive, but even he quit at a certain point. The lesbians seem to go at it until they become physically exhausted, and stop only because they just can’t keep going.