Ways to prepare for freshman year?

Just tell her not to be someone who she isn't, don't be too obnoxious or too shy, be open to talking to people who look friendly. As for getting ready for school, it's a good idea to do some preliminary work over the summer; the "Made Simple" series of workbooks has many subjects which she might be taking next year, and she could get a head start so she won't fall behind. I always get my things for school ready at least 2 weeks ahead of time, and you could take her on a tour of the school if she is going to the same school as you...It might make her feel more comfortable with her surroundings. Hope this helps! :)