Lovelace married William King in 1835. She had three children with him. She soon got cholera, a digestive disease caused by drinking contaminated water. She was very lucky to have survived. She also had asthma, a breathing issue, and digestive problems. She used painkillers to treat her problems. Because of this, she became addicted to opium, a highly addictive drug. She died on 27 November 1852, of uterine cancer in London.