I’m still of the opinion that there should be some way to re-exert your control once the demon breaks free. Some sort of fetish you build in advance at the theumaturgy bench perhaps. So that when the demon breaks free you simply consume the felish and the dmeon is reset as if you’d just summoned it. Make the materials costly if you must like black blood, a sacrificial blood flask and a fragment of power for instance.
My personal headcannon for my character has her as a complete misanthrope so I hate having her run around with a human slave. Although it feels like the zombies got a little boost with the new patch so I might go back to my undead army.
May Set be with you 