How do I attach another user's photo to email in my account?

Question

How do I attach a photo from another user's (my wife's) iPhoto library to an email (gmail) that I am writing from my account on my iMac (using OSX 10.7.5)?  I have set up both iPhoto applications to allow sharing and have updated the Get Info in my wife's account to allow my account to read the pictures folder and enclosed items.  When trying to attach to the email, I am now able to open my wife's pictures folder, but her iPhoto library is still greyed out, so I cannot see the photos to select them.
Thank you.

Answer 1

The easiest way to do what you want is to both backup your Libraries to an external hard drive (eHD) using some kind of backup software. Then you can just select tracks from her Library on the eHD and drag them into your iTunes on your laptop.
However, this means that your laptop will fill up with songs that you both have, which will waste space. There is no way round this unless you share.
when I go to add files from her username I see a red minus symbol on the folder and cannot get into it.
Yes, this is the way OS X works : each user only has normal access to their own files, and sees the red symbol for other users. It's to do with permissions and security and privacy.
I'm not interested in sharing because I would like to burn a disc in the future with these files.
The ability to burn discs from playlists is unaffected by having a shared library
To prevent ourselves from burning the same disc twice
Isn't this MORE likely to happen if you have duplicate songs across two libraries?