In reply to Denni:
A copy of Microsoft Office 2013 for business use would set you back £200 on its own! You might be able to avoid shelling out that much by:
1) Getting a copy from her work. Depends on what type of licence they have, larger organisations often have licences (called site licenses) that allow them to install it on work machines, even if that machine is off-site.
2) Paying (or persuading work to pay) a monthly or annual fee for office 365. Currently £6pcm or £60pa
3) If the documents are simple, using an alternative piece of software. Examples are WPS (formerly Kingsoft) Office, OpenOffice and LibreOffice. None of these programs are perfectly compatible with Word, but they get quite close. You can also get remarkably far with Google docs.
4) Buying a second hand copy. Office licences are transferable, so it is legit. You have to be careful though, as a lot of "second hand" copies of office available online are actually pirated. So they might suddenly stop working.