The only way to get it to open in Word is for her to resend it in Word format. Pages can save it in many formats as well as it's own, including Word.
Get her to open the document in Pages, choose "Save As.." and choose Word doc type.
Alternatively get her to print the document, when the print dialog box opens click on the pdf button and choose "Save as pdf" to create a pdf document of the CV.
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