Trollope was a writer for more than five decades, and one of the best known novelists in the UK.
She authored more than 20 contemporary novels including 2013's Sense & Sensibility, the lead title in HarperCollins's Austen Project.
The author also wrote 10 historical novels, which were published under the pseudonym Caroline Harvey.
Trollope occasionally wrote short stories and pieces for magazines, chaired book prizes, authored a 2006 study of women in the British Empire called Britannia's Daughters, and edited a 1993 anthology of rural life called The Country Habit.
She received an OBE in 1996 for services to charity, and was made a CBE in 2019 for services to literature.
Trollope was born in Gloucestershire, a fifth-generation niece of the English novelist Anthony Trollope.
"I'm not a direct descendant of his, although I'm from the same family, but another branch of it," she once told the Independent. "I admire him hugely, and take several things he said about writing very much to heart."
She read English at Oxford University and worked in the Foreign Office and as a teacher before becoming a full-time author in 1980.
Her early novels were all written under her pseudonym until the release of her first contemporary novel, the Choir, in 1987.
Several of her later novels were adapted for the screen, including A Village Affair, The Choir, Other People's Children and The Rector's Wife.
She told the Writers Write website that she preferred to use pen and paper to write her novels.
"I love the silence and intimacy and simplicity. I can also, when it's going really well, write like the wind - 1,000 words an hour," she said.
But the process of writing was "extremely hard".
"But then, I think anything worthwhile is inevitably going to be hard," she added.
"The most exciting moment for me is the penultimate chapter - the end is in sight, and clear, but the activity of the race isn't quite yet over."