Unable to Login or change password.
If she can sign into the GW2 forums, she might be able to retrieve her password from her browser’s cache. If that fails, she (not you) will need to file a support ticket. She should read this for info on what to put in the ticket: https://forum-en.gw2archive.eu/forum/support/account/How-to-Submit-a-Ticket-Account-Issues-2/first#post3954