If she's using a Windows 10 device, Narrator comes with it and may be enough for getting started, although as others have said JAWS and NVDA are more robust.
Microsoft has the Disability Answer Desk and either of you can call or chat anytime, for free. The contact details are on this page. Scroll down and there is live chat and phone options.
$1 Also check out support videos and user guide:
Narrator at at Glance (and others)
$1Narrator 101 webinar:
$1 Complete Guide to Narrator:
$1