What Anti-Malware-Spyware programs has she got running. You would need the likes of Superantispyware.Malwarebytes and Spywareblaster [all free] as back up. I am afraid Avast on its own will not stop the nasties.
Yes I you can that is why you need decent back up programs.Something with full time protection. Just run the free version of Malwarebytes and see what it finds. Maybe run C cleaner to get rid of any junk.And do a Defrag might make it run a bit quicker.
This thread is now locked and can not be replied to.