Does she use G-mail?
When my brother in law got a private e-mail from a realtor with an attachment that suggested we get our basement lined with plastic; suddenly the ads on Slashdot were for local basement lining service companies, even before my brother-in law read the e-mail.
Google not only read the e-mail attachment before it entered our home network, it automatically matched his e-mail account to our houses IP address (we don't share computers, so not cookie based), and started serving advertisements to other people based upon that potentially private information.
If you have medical conditions, and you talk about them in 'private' g-mails... (or just google search them...) it's not longer private.