Are you sure it was Flips and not Flip ?
https://msdn.microsoft.com/library/jj883726(v=vs.85).aspx

Did she run the Browser Cleanup Util (BCU) ?
If so please attach the BCU log to your next post so we can have a look.

What problems does she have with IE ?
What OS/SP ?
What exact version of avast ?
Any other security (related) software installed ? (or did she had)