Her nerves were ruined.

Debauchery ceased to give her a sufficiently violent shock to render her oblivious of the past.

She resembled one of those drunkards whose scorched palates remain insensible to the most violent spirits.
She had done with lust, and the society of her paramours only worried and wearied her.

Then, she quitted them as useless.
She now fell a prey to despondent idleness which kept her at home, in a dirty petticoat, with hair uncombed, and face and hands unwashed.

She neglected everything and lived in filth.
When the two murderers came together again face to face, in this manner, after having done their best to get away from each other, they understood that they would no longer have strength to struggle.
Debauchery had rejected them, it had just cast them back to their anguish.