Life happens. Sometimes not for the better. Nothing to apologize for.
Besides, deadlines can be a bitch, even if you think you've put a release date far enough out. Especially for game design. You're not the only one. I have my own release deadline looming over me, and I have no idea if I will make it on time. Set to update my own VN project by the first. It will probably be later than that. Don't sweat the small things, especially since you don't have bean counters holding your balls over the fire to be done "on time."