Original: Melanie visited him faithfully during his decline until his death on February 22, 1903; her lack of faith to her husband, however, tortured her, and she killed herself in 1906.
Simplified: A lady called Melanie whom he had loved visited him faithfully during his last years until his death on February 22, 1903. However, she felt very bad because she had not been faithful to her husband, and she killed herself in 1906.