Save the below code as an HTML (or save the attachment as a .html). Then she can load it from a browser, login, and click the Voipo Fax link on top to show the fax page directly below.

PHP Code:
<a href="https://secure.voipo.com/features/fax" target="voipo">Voipo Fax</a><br><br>

<iframe name="voipo" src="https://secure.voipo.com/features/fax" width="100%" height="95%" /> 
(it uses iframe, might not work depending on your browser security settings)