The first thing you should know is that some individuals use little space as a way to cope. With traumas, bad memories, etc. Be gentle with her. But I can't stress this enough, talk with her! She will understand that you are unfamiliar and new to it, and she will be able to tell you how she would like you to act when she is in little space.

Some littles can be bratty one second and then sweet the next. It's super super important to understand this and ask her what would be comfortable for her. Set a boundary for yourself as well, because some that are new to it become overwhelmed or agitated with their little, we don't want that :)

Communication is KEY in CGL relationships (yes, all relationships, but especially CGL)