don't understand the problem...
"Another of my relatives (older generation) was recently bought an iPad to keep her in touch on e-mail. It's confusing the heck out of her because of the way that it automatically files stuff, in particular different locations for the pictures that she takes with the iPad and pictures that are sent by e-mail and detached."
I just saved a pic from an email and it appeared in my photo gallery alongside all the other photos. That seems quite logical to me.