You'll find the slave outside in the plantation, though if the guards see you free him they will attack you (you may want to kill the guards first to keep the slave safe, or try using a [[Morrowind:Command Humanoid|Command Humanoid]] spell on Hides-His-Foot before you speak to him and take him away from danger
). Escort the slave to the Sterdecan's Farm to the northeast of the plantation and have the farmer take him (he must be taken to the door of the farmhouse for your journal to be updated).
Return to Ilmeni in [[Morrowind:Vivec (city)|Vivec]] to complete the quest. This is her last quest.