The last four chapters of the novel explore the steap decline of Miss L. He will not recover, you know, but in what ways will he fail and fall--you can't be sure.
"They left the speakeasy together, both very drunk and busy: Doyle with the wrongs he had suffered and Miss Lonelyhearts with the triumphant thing that his humility had become."
"Miss Lonelyhearts was very happy and inside of his head he was also calling on Christ. But his call was not a curse, it was the shape of his joy."
"When they had reached their coffee, she sat down next to Miss Lonelyhearts. He could feel her knee pressing his under the table, but he paid no attention to her and only broke his beatific smile to drink. The heavy food had dulled him and he was trying desperately to feel again what he had felt while holding hands with the cripple in the speakeasy."
"He tried again by becoming hysterical. 'Christ is love,' he screamed at them. It was a stage scream, but he kept on. 'Christ is the black fruit that hangs on the crosstree. Man was lost by eating of the forbidden fruit. He shall be saved by eating of the bidden fruit...'"
And soon thereafter, Miss L. runs from the Doyle's house, runs for his life. The life you save may be you're own, and so on. And it may not.