iPhone 5, running iOS 6, How to copy pictures?

Last year we upgraded all management phones to the iPhone 5. One person could not upgrade to iOS 7 because she didn't have enough free space on her phone. The phone is mostly filled with pictures.

I have set up a icloud account for her and installed the necessary software on her computer to use photostream. Unfortunetely this only works with pictures taken after setting up the photostream, so we can't use this to get her pictures off her phone.

When connecting with a cable to a computer, it does not display the pictures (some users can access their pictures this way, others can't, I have no idea why). This problem has been fixed in iOS 7, but she can't upgrade because of a lack of space.

I know I could 'copy' the pictures so they would appear in photostream, or email them... but that would take up wayyy too much timso

Or there any other solutions to this problem?

thanks, Michiel - Belgium.