AE dual band concurrent (2.4 + 5 GHz) running 7.7.2 using Airport Utility 6.3.1 on Mountain Lion (10.8.5). It says "No remote AirPort Base Stations discovered" under the "Other Wi-Fi Devices" button. Is this working for anyone else?
I have two iCloud accounts added under the Back To My Mac. Mine and my mother's. Both showed the green dot when added.
Try attaching the AirPort Express device directly to a computer via Ethernet cable, configure it as you want it to be, and then return it to its proper position on the network.
You may have to first reset the AirPort Express device if it doesn't show up when connected to the controlling computer via Ethernet cable.
I can configure it just fine when I'm on the local network. My mother lives 2000 miles away so I wanted to be able to administer it remotely should need be.
I'm not sure that you can configure an AirPort Express device for setup over WAN like you can an AirPort Extreme or Time Capsule device.
I certainly can configure my Airport Extreme device remotely if authorized to do so using Back to My Mac.
Have you tried to remotely control your mother's computer using remote Screen Sharing if she's on a Mac or using TeamViewer if she's on a PC? If you can remotely control her computer you should be able to configure the AirPort Express device.
Not working for me to remotely administer an Airport Express
