Let's go back now.", said Herman and he started walking back towards their room after giving threat to Cruella while leaving Othneil and Cruella alone. Well, Herman's words were clearly showing a threat for her not to mess with his precious mate otherwise the circumstances will be worst.
On the other side Othneil wanted to laugh out loud after hearing his brother's threat to Cruella. When he got to know that Herman is also coming with them, he was upset because he lost the chance to roam around with his beautiful. But the Herman's threat to Cruella made Herman's presence worth.
He was shocked when Herman took back his beautiful with him to their room. And he sighed as he was left alone with the most irritating person. Staying with Herman was the better option for him than staying with Cruella.