she's not very clear about what's happening
Hi, neither are we...
Without some details, e.g. path/folder/filenames of infected files, & Windowsversion (XP?), Email-Program etc., it's just guessing:
But there are other Cleanup/Removal-Tools out there, if you can't manage it with avast-mainscanner or manually:
VGREP --> follow the red links to Trendmicro, Symantec/mcafee