I heard that S&D sometimes deletes system files...
I think that you should restore these items from the quaratine.
Then go to
http://www.lavasoft.de and get an Adaware personal edition.
Make a full scan, and remove the spyware it founds.
Then try to see if it works...
Also you can try getting her another browser like "Mozilla Firefox" (
http://www.getfirefox.com )