 In the middle of 1864 the Beetons again visited the <unk> in Paris — the couple 's third visit to the city — and Isabella was pregnant during the visit , just as she had been the previous year . On her return to Britain she began working on an abridged version of the Book of Household Management , which was to be titled The Dictionary of Every @-@ Day Cookery . On 29 January 1865 , while working on the proofs of the dictionary , she went into labour ; the baby — Mayson Moss — was born that day . Isabella began to feel <unk> the following day and died of <unk> fever on 6 February at the age of 28 . 
