Despite knowing now what was wrong, their heads were still a bit messed up from the experience. They knew that some of what they considered normal was actually not, but they were not certain exactly what. They were pretty sure they shouldn't be naked in front of each other, but even knowing it they were still unable to feel shame in their situation. Even if they were, all clothes in Whitney's room had vanished before they even walked in, so they decided to just go with the naked lifestyle for now.
Grace was still taking it the worst, so she started clinging to Jeff, both emotionally and physically, causing him to have a hard time as the arousal seemed to be a permanent feature now and his sister's breasts were rubbing against him all the time.
Zoe and Lucy stopped the bickering after their talk to their mother, and were both on the bed sleeping while hugging each other. Jeff felt sick though, how much of their current behavior was those bitches manipulation? He couldn't be sure, so he made a point to be careful with what to do moving forward. Still, Grace was making it hard on him, the term blue balls was on his mind all the time now.
Grace was also unable to sleep, but she was pretending to be. Her mind was a mess with this events that were taking place. Part of her was scared and hopping this was all a nightmare, but another part of her wanted to open that door in the hopes that she would stop feeling like this, she wanted her mother back and this part of her was considering being tuned into something different just so the family would be together again. There was also the matter of how incredibly horny she was feeling, she had being trying to masturbate without leaving Jeff's side but the idea made her a bit uncomfortable, although she was not sure why.
A few more minutes pass, and the room is flooded with a strong scent. Zoe and Lucy being closer to the door were hit first and the effects was clear and their cunts started producing even more juices and the two of them started rubbing each other as they moaned in their sleep.
While they were awake, Jeff and Grace we so distracted they didn't get the early warning, and a second later his sisters started moaning as well, as she decided to throw all caution to the wind and push her fingers up her pussy. Jeff also started to work his own tool, watching Grace, his little sister loose herself in pleasure, but again, for some reason he couldn't cum. Seeing her brother in such situation hurt Grace, so in a purely lust based decision she wrapped her lips around his cock.
Grace was not experienced with blowjobs but she knew enough to make Jeff loose his mind in his state, and the taste of his cum was something she never experienced before, she was in new levels of pleasure she never knew existed now, same as her brother.
Zoe and Lucy kept rubbing on each other but that was it for them, as they were too tire to wake up. Grace on the other hand had tired herself to a point were her skin was glistening with sweat, she felt a bit gross but she pondered if she should take a shower. Jeff had finally gone to sleep after the climax and that looked like a pretty nice experience right now.