You and your lamia girlfriend finally made it to the camping site, but it feels like it took ages to get there! She offered to help set up the tent and get things ready but you insisted she be "selfish" just this once and get all the sunlight she could handle.
So, while she was sunbathing, you put up the tent and took time to get the campsite ready. Which took some time, because a simple two person tent would not have enough room for her tail. But you managed it without trouble and when you sit down to rest she wastes no time in thanking you.