Graham Taylor, the former Anglican vicar who became the best-selling author of teen fantasy novels like Shadowmancer, has told London’s Telegraph that he is giving up writing to care for his 11-year-old daughter, Lydia, who’s been diagnosed with Crohn’s disease. Publishing as G.P. Taylor, the 51-year-old achieved great acclaim for his 2003 debut, Shadowmancer, which EW described as a “magic-drenched period thriller for ‘ages 12 and up.'” Since then, Taylor has published follow-up novels in a similar C.S. Lewis-inspired Christian parable vein, like 2004’s Wormwood and 2005’s Tersias.

“Looking after Lydia is going to be a lifelong thing and I’ve made my decision,” Taylor told the Telegraph. “I’ve realised that I’ve got to stop writing until she’s of an age where she’s more able to look after herself.” Since Lydia’s diagnosis with Crohn’s disease, an inflammatory disease of the intestines, she has been through eight operations and has also developed pneumonia.