You can unlock the hidden administrator account, use that to associate the machine with your wireless network, log out of the admin account, and then it will be able to connect to MS and retrieve her new password.
I've had to do a few password resets on MS accounts set-up on Windows 8. The way to tell if it's a MS Account or local account is how it's presented at the login screen. ( See pictures)
Clarification: Under the user account or user's name, there will be an email address if it is a MS Account. The email address is their MS Account Username.
Screenshot1 is a local account
Screenshot2 is a MS Account