Once the pig bug has taken hold of her master, the Empress becomes a regular feature in the Blandings books, playing some part in most of the subsequent stories:
In the course of the Blandings saga, the Empress is tended to by a large and disparate bunch of pig-keepers, most of them rather unappealing types who, unsurprisingly, smell strongly of pig.
Soon after, to Emsworth's disgust, Wellbeloved defects to Sir Gregory Parsloe-Parsloe, whose own animal the Pride of Matchingham is the Empress' biggest rival. In the novels Summer Lightning and Heavy Weather, while she is under the care of Pirbright, she becomes subject of various schemes; first stolen by Ronnie Fish (who has upset his uncle by bouncing a tennis ball on her back and hopes to get back into his good books by "finding" her again), she is stashed in a gamekeeper's cottage in the woods, and fed by the admirable Beach, but later moved by Hugo Carmody to a caravan owned by Rupert Baxter.
In Heavy Weather, she finds Galahad Threepwood's notorious memoirs, hidden in her custom-built new sty by Percy Pilbeam, and eats the whole book, and not long afterward finds herself in the dicky of Ronnie Fish's car, as he threatens to run off with her if her master refuses to fund Fish's elopement. Throughout this, both Emsworth and Gally suspect Parsloe-Parsloe of being behind all the foul play.
In Full Moon, Bill Lister is twice hired to paint her portrait, and she is put in Veronica Wedge's bedroom for a time by Gally, while in Pigs Have Wings she spends some time at Matchingham Hall, home of Parsloe-Parsloe, having been stolen by the turncoat Wellbeloved in response to Gally's cunning theft of Parsloe's new pig, the Queen of Matchingham. Her subsequent rescue leaves plenty of time to return to form, before her triumphant third Silver Medal.
In Service With a Smile, a Church Lad teases her with a potato on a piece of string, and Dunstable once again schemes to take her away from Lord Emsworth, planning to sell her to Lord Tilbury, but the plot (involving Lavender Briggs and Wellbeloved) is blocked by the dashing Uncle Fred.
In Galahad at Blandings, dastardly Huxley Winkworth, feeling she is overweight, plots to release and give her some exercise. When he finally gets past Monica Simmons able guard, he finds her suffering a hangover, Wilfred Allsop having dropped a flask of whisky into her trough the day before; she bites his finger, and Emsworth's fears that she may be in danger of infection prove priceless to his own happiness.