Two things I think are great about kerbal are: 1) It's sandbox with a wide variety of things you can do. Some people enjoy making boats, some like making weapons, some like making planes.. Travelling to other planets isn't the primary focus of everyone. 2) The difficulty scales well because you set your own goals in the area that interests you. The goal is always something just within your reaching distance because you are the one that chose it based on what you can do now. I think you have to be careful about being too enthusiastic because you risk taking away that free-play discovery element of the game by setting challenges too early. When I first got kerbal I was not interested in getting into orbit at all. My primary focus was building a well balanced spaceplane. Later I spent a long time just creating modular spacecraft but not launching them. Building the rockets has always been a low priority for me, so I wouldn't like being directed into rocket related challenges when I was just learning the game. Just show her the basics. - How to load stock rockets/planes. - How to use the vehicle/plane assembly - How to do some simple staging setup with separators. - How to use the jetpack. - Some useful stuff like SAS & RCS. - How to use one of those orbital nodes to plan burns in space. Then give her a link to scott manleys youtube channel and leave her alone, give her some space so she can figure things out herself and explore the areas that interest her most. Later on when you know what part of the game she really enjoys you can look at giving her challenges in that area.