She wrote several novels after, none of them so popular as Charles Auchester, and then died young at the age of 32 :-( The biographical record on her is frustratingly lacking in detail -- in particular the identity of her best friend and enthusiastic first reader, who encouraged her to send the manuscript of Charles Auchester to Disraeli, and subsequently provided an obituary for her to The Atlantic.

(Or, for that matter, exactly when she wrote Charles Auchester -- she reportedly started it when she was 16, before Mendelssohn's death, and she was 23 when it was published -- some sources say she wrote it as a teenager, but also there's one academic paper I saw which suggested a book published in 1850, when she was 20, as the main biographical source she was drawing on.)