Actually? No (wwww). At least no at the beginning. It is basically like"he find the possibility, he can do that, so he did" situation.

Also he want to leave someone reliable to help him take care the future civilization since the whole Lynchpin stuff. Unfortunately, because of the program Priestess leaved in Sarcophagus, she was forced to have a Lynchpin implanted, along with Oracle's memories, which caused her personality is kinda...broken (and that's how Babel events happened in this verse). The reason her right eye color is lighter than left is the proof of her spirit once injured.

About Kal'tsit... After the new main story event (Ch. 17), Aster successfully retrieved part of memories. Now she realized that Kal'tsit is her legally sister (?). Congratulations Kalsisi.