A conversation about who is responsible for giving the food to bandits will develop in the RV. Further events will be different depending on whether you saved Carley or Doug in the first episode, Half way through a walker gets stuck under the RV and everybody gets out and Lilly starts interrogating people and questioning there motives and such. If you saved Carley back in Ep 1 then Lilly shoots her, but if you saved Doug instead Lilly wants to shoot Ben and Doug gets in the way and basically Doug gets shot!. Now you can either leave Lilly at the side of the road (I would and did) or bring her with you and worry about who gets it next.