Hi there and welcome David,
To confirm, you mean the password ***** sign into windows correct?
And did she setup a Microsoft Account to use for signing into windows?
Please let me know
Ok, but is she using a Microsoft account as the user name? Like @hotmail.com or @outlook.com ?
ok, click on my link below please and attempt to reset her password *****
If she is able to, use this new password ***** sign in
Let me know the results please