When Lee and Kenny reach the motor inn, a conversation will develop. It will begin with a question about how many supplies you managed to collect from the pharmacy. Reply with what you want, Kenny will tell the truth anyway, Lilly's reaction will strictly depend on the number of supplies. Then the idea of leaving the inn in the RV will return, your answer is important here. If you pick a different answer while talking to Lilly and you told Kenny something completely different at the start of the first chapter, he will notice the fact that you changed your mind. More so there will be a talk about leaving or shooting the girl in the first chapter (Lilly will not be happy if you left the girl be eaten). You can try to explain yourself, but it does not matter what you say to her.