Valerie wants to know if she doesn't use Office 365/2013 next year, will she be able to open the documents? Leo says there are free, open source options like OpenOffice, which will open the docs Valerie uses with no trouble. In fact, Microsoft's own TOS says:
"Your data is yours. If you decide to cancel your Office 365 subscription, you can download your data for example, your email and documents on team sites and save it to another location. You should save your data before you cancel. All the data associated with your Office 365 account is deleted 90 days after cancellation."
Valerie wouldn't be able to use the Office 365 software, but the documents are still hers. Leo's advice is to not use the Microsoft .docx format, but use the more open source RTF instead. She also should make sure to download all of her data, because any data left stored in the cloud with Microsoft will be deleted 90 days after cancellation.