You moved too quickly with her and although she wants you and was willing to have you for one night, her shame and embarrassment from the act was too much for her and she left for good to keep her from the temptation of repeating the act.I wait for 20 days and there is still no sign when she will come back
You are going to have to go back to a save before that night and not reveal your feelings yet, and spend a little more time inside her mind softening her opposition to incest. Then you will be able to enjoy repeated oral, vaginal and anal sex with her and if you play your cards right, threesomes with Callie as well.