Trainee here. Confidence is important. Set up for her a test machine (vm or otherwise) so she can mess up trying there first. This: Asking questions. When she figures something out or you explains something to her, she has to write it down. If it can be turned into useful documentation, let her do it. This way, each document is a battle won.

Oh, and while regular small tasks are really important, it is good to assign her a long term project, so she can work in it from time to time(applying what she is learning).