You said:
"Current hard drive is "E:\Users\Christine\Pictures..."
This means more than just the Pictures folder was moved, your entire User directory is now on E according to the path you give. This is never correct.
If this is not correct then please explain what the actual path is for Users\Christine and what the actual path is for Pictures.
If as you said you followed the same tutorial as I linked it will only be the Pictures folder on E. You said it still has the Location Tab. Open that and choose Restore Default, then Apply and OK. When it prompts to move files do not move them since they're already where you want them on G.
Confirm the path has restored to C:\Users\Christine\Pictures.
Restart PC, now follow the tutorial to move Pictures folder to G to the folder you created for it there, but again Do not opt to move files since they are already there. Afterwards confirm the Pictures folder on G has the Picture icon on it which signifies the official Shell Picture folder.
If any problems see Option Two here to recreate the Shell Pictures folder in it's default location: https://www.tenforums.com/tutorials/23504-resto.... This tutorial will always result in the folders being restored from my experience handling these cases countless thousands of times.