from what i remember the birth are like sex scene, when you try to talk to lillia she wil said she going to giving birthAny way to educe birth? Cause I've rested god knows how many times and nothing has happened despite the kid supposedly being ready to come out.
the pregnancy time are quite long time needed, if im remember atleast 30 days then when you check her stats on lillia picture top right on bedroom and the baby will out just few days later, still its take time until she giving birth.
i havent play the game again since february because the last boss was very difficult