If the photos were in iPhoto for iOS, then she would have had to put them in there via the Photo App. When I had iPhoto for iOS, I did have albums that coincided with my Photo App, that I had in a Sharing Album, or in the cloud. Every other photo I put in there, I had to import from the Photo App.
To be perfectly honest I'm sure iPhoto went away in the iOS8 update, not 8.3, bc I haven't had it for some time, but I could be mistaking. She might need to dig down, but I'm pretty sure they would not have just disappeared, bc then Apple would be liable, especially if a Pro photographer used iPhot exclusively, and lost clients work . . . I'm away and can't dig around atm, but will see what I can find.
iPad Air 2 using Mac Forums App