Darius had a separate chamber for Medea in his lab, and he traveled there as a form of taking a short break from nonstop work. The chamber was a special Faraday cage with many runes carved on it powered by the usual Source Energy.
The runes were switched off, allowing Darius to enter inside and see that it was a relatively operational room with all the facilities needed for childbirth, including nannybots who were idle, waiting for the birthing to start.
They all came active in Darius' presence and got to work cleaning the place up and making sure everything was perfect for work. Darius went directly to Medea who was on a flat bed, sedated.
He gazed down at the beautiful Demigoddess/witch with a soft smile, nodding to a bot that had accompanied him into the room. It held five gallons of clean semen extracted from his best samples.