G'day David , and Welcome to BC.
Your granddaughter was probably just unlucky enough to be "sideswiped" by one of those sites. it happens to all of us at one time or another.
Please run these for me in the order listed......copy and paste the log they produce in your reply
Download Security Check by Screen317 from HERE
* Save it to your Desktop.
* Double-click SecurityCheck.exe
* Follow the onscreen instructions inside of the black box.
* A Notepad document should open automatically called checkup.txt; please post the contents of that document.
Note: If a security program requests permission to access the Internet, allow it to do so.
Download MiniToolBox, save it to your desktop and run it.
Checkmark the following checkboxes:
Report IE Proxy Settings
Reset IE Proxy Settings
Report FF Proxy Settings
Reset FF Proxy Settings
List content of Hosts
List IP configuration
List Winsock Entries
List last 10 Event Viewer log
List Installed Programs
List Users, Partitions and Memory size.
Click Go and post the result (Result.txt). A copy of Result.txt will be saved in the same directory the tool is run.
Note: When using "Reset FF Proxy Settings" option Firefox should be closed.
Please download AdwCleaner by Xplode and save to your Desktop.
* Double-click on AdwCleaner.exe to run the tool.
* Vista / Windows 7 / 8 users right-click and select Run As Administrator.
* Click on the Scan button (only once)
* AdwCleaner will begin...be patient as the scan may take some time to complete.
* After the scan has finished, click on the Report button...a logfile (AdwCleaner[R0].txt) will open in Notepad for review.
* Check the removals and see if you are OK with the list.
* Click on the Clean button (only once)
* Press OK when asked to close all programs and follow the onscreen prompts.
* Press OK again to allow AdwCleaner to restart the computer and complete the removal process.
* After rebooting, a logfile report (AdwCleaner[S0].txt) will open automatically.
* Copy and Paste the contents of that logfile in your next reply.
* A copy of all logfiles are also saved in the C:\AdwCleaner folder which was created when running the tool.
fed up with Windows antics...??
LINUX IS THE ANSWER
I USE LINUX MINT EXCLUSIVELY... NO DUAL BOOT, NO VIRTUAL MACHINE
Failure is not an option. It comes bundled with your Microsoft product.