It seems like your friend has modified the access permission of the file to Read for other users except her.
Ask her to change the file access permissions.
It can be changed by following steps.
1)right click on the file and select properties.
2)select security tab. A list of users with their permissions will be shown to you.
3)Ask your friend to select your username and select full control permission over the file.
Then you can able to modify the file...
Hope this helps u... :-D
If this solution solved your problem, please mark it as solved.
File is not read only.
there are no other sessions open for the file.
I can save it with a different name no problem its only when trying to overwrite the original file the i keep getting a "file not saved" message