|It seems to me the download manager is probably not needed.|
Point in fact, she's trying to download the 'download manager' without having it installed yet.
Personally, I stay away from stupid proprietary software providers try to pass off on their customers.
If however there's some reason she can't function without it you have two options as I see it.
1) Download it on somebody elses computer and put it on a USB memory key or CD to copy onto her PC
2) Call her provider and ask them what to do. It's their service and their stupid software after all. If anybody should be able to help fix this problem, it's them.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.