Background
Enni became an apprentice to the warlock to develop her magical talent. It turned out he was more interested in abusing the pretty young girl than teaching her any magic. When Enni tried to leave, the Warlock bound her in magic chains and kept her as a sex toy. He used her to entertain his guests and even teleported her to distant towns to bribe powerful contacts.
Observing the warlock Enni concluded that he was not the brilliant magician she imagined. His spells and power items had been purchased with gold or gathered by threats, theft and robbery. Continuously chained up she was unable to get hold of any wand or focus item and thus unable to cast any spells of her own.
One day the Warlock got a summon to a distant country. As he was about to leave he cast a fancy spell on the key to Enni's bonds. When the key turned to dust, he explained how his command word is now the only way to undo her indestructible magical bonds including the Gag of Sustenance (no need for food or drink). She'd better hope he makes it back.
Enni now had the entire mansion to herself for an indefinite period of time. She decided to explore the place to get the Warlock's stuff and her own magic going. Tied the way she was, every meter is like a mile but she pushed on. The goofy looking flying pig chained to her collar began to show sign of becoming a magic familiar.