Wordpress dot com is a blog hosting service based on wordpress. Perhaps she meant they were setting up a web server to run multiple blogs with multiple users, using wordpress as as a platform (and specifically the MultiSite feature https://codex.wordpress.org/Create_A_Network ).

I can see how this would be a useful endeavor. In any case, yes, her language may be imprecise here but remember to be forgiving to people who are just learning!!! You are skeptical of her skills; I am skeptical of the notion that you have enough information to evaluate her skills or the class. :)