Just about any of the free office suites would do then, none of them are awful....

http://www.libreoffice.org/download/
http://www.oxygenofficepro.com/downloads.htm
http://www.openoffice.org/download/index.html

etc, etc

She could also go for one of the online ones, like Google Docs maybe ?
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Remind me to change my signature to something more interesting someday