Nath.

Eventually, Haitien manages to convince him to go with him and the Stellaron Hunters. The fact he was already found once and that there are people after his child don't make him reassured. Plus, life in that world wasn't exactly pleasant for him, in the couple of weeks he lived there. He had nothing else than his money, but there was nothing to buy except from some super simple foods.
He had to wear the garbage he found in that cottage, wash without any soap… live in the dust, use dusty stuff. Luckily his baby is the antichrist otherwise he could have risked very serious consequences.

He goes on the starship with them, bringing his baby with him of course. He is literally obsessed with him now and he really think that ZhongLi and the others might try to hurt the baby now. Especially after what he did to Chan and Hudie. He can't help it, he doesn't manage to trust them yet. They'd need a bit of effort for him to believe their intentions are really as good as they say. He doesn't know any of them closely and can't know what they are really like.

Anyhow, once on the Stellaron Hunters' starship, on Elio's order, Kafka makes sure to treat Skylar especially well. After all, there can only be two reasons if the "baby Aeon" wanted to keep people away from that cottage: protect himself or protect Skylar and they can't have the certainty.
After taking a careful and very long shower, wearing clean clothes, washing the baby and feeding him, Skylar heads to have some rest in Sam's room — that was given to him since we don't know a thing about him/her so we pretend they are off to some mission at the moment.