This may be wrong, but worth trying.... Assuming that it is just one page to change, she can copy and paste the text from the webpage (opened in IE or Firefox etc) into notepad (which removes the formatting). Then change the text to what she wants. Save the file and copy and paste back into the web page. Someone else can confirm if this would work - or amend it. Don't forget to backup before it is changed!
I use Expression web which is similar to Dreamweaver, I understand. I open the program and amend the pages directly. Surely it isn't too difficult to do that with Dreamweaver?