Axel didn't feel the need to sleep anymore since he had become a divine creature and as the bloodline of his father was very strong in his body, so during night time, he was the one taking care of their daughter.
And while they were playing with Willow in their dimension, or rather teaching her how to fight and how to use her power, because that was what she liked the most, Elias sent a message to both of them via the communication stones they always had on them and he asked them to join him as soon as possible in the prison dimension.
Kevin then said to Axel: "Let's go, if he contacted us at this hour it's probably because they finally found who is trying to take over your body."
Axel nodded and Willow asked them hastily by the permanent telepatic link she had created with them, 'I want to come with you, I want to know what's happening to Dad too, and maybe my psychic powers will be able to help you.'