He doesn't take the robe back, either it slips his mind, unlikely since he can see it or he has no desire to get her into one of her moods. Clearly this was far more important to him then a robe. Of course the two women were about to embark on a new adventure.

Fafner looked after them for a moment. He could be cruel no doubt but he could be fair too when it benefited him. He was unconcerned with holding onto a single slave when there was far more to gain. Getting out from beneath Blue's thumb and becoming independent again like he had been before he had been introduced to the drug, even if he had known she made brief contact with his hated father she had never known.

If his father was the cruel sort perhaps he would have sold her to him but there was a fate chance of that happening plus the contact was brief between their minds meaning she was merely an interest.

No, if she were successful he would keep to his word. The drug, the addiction, that was what was more important to him now.

“We need to get going.”

Blue drew him back, his mouth tendrils twitched in a gleeful way. Yes, off course. And he slithered back into the ship. The vessel blasts off leaving them to embark on another adventure ...