Simplify the following text for a Grade 7 native English-speaking person.
Original: Melanie visited him faithfully during his decline until his death on 22 February 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 .