Silia accepted the maidbot at home, but there are still parts she isn't comfortable with. For example : Vermana's breast size. You might have seen it in the comic already ;p And when the robot doesn't care much about interacting with anything else than her Master's genitals, Silia can't just ignore that she has a partner to work her bf's cock with. And in the end, it appears that they still sing on the same sheet : cheetah D n°1. In any case, it seems that they're doing a great work double teaming that cheetah and they had a lot to work with! And aside all that, Elnadrin is being himself, just enjoying his girls and relieving himself out of her hard work. And it seems it was much needed!