http://www.pcmag.com/article2/0,2817,2409056,00.asp
It's better than any other anti-virus I've ever used and its loving free
it's an antivirus, install it.
Tell her to buy F-Secure instead of Norton.
Paying for antivirus is a scam. There are so many free antiviruses out there that have the same functionality if not better than any you have to pay for.