You're right, gabapentin and the other anticonvulsants are rarely effective by themselves in someone who has augmented. Even Betty is taking some codeine with her pregabalin. I also wish more GPs - more everyone - were familiar with augmentation. That single knowledge gap accounts for the bulk of visits to RLS/WED specialists, and the bulk of our collective grief.
I'm glad you're working on the post-ropinirole plan now, while you still can think rationally (it gets harder during withdrawal). I think you have to speak to the nurse/doctor again, to get a prescription in hand for Horizant or gabapentin, and to provide them with the RLS Foundation's Medical Bulletin for healthcare providers and other handouts on augmentation (see the link in my signature block; the 3rd or 4th item on the linked-to page tells you how to get these). It would be best to read them yourself first, choose which you're going to hand to the nurse, and highlight the parts that are relevant to you. Try to keep your highlighting to only the sentences that summarize, since h/she will not have much time to read it. They should understand that you will be experiencing severe symptoms and might be unable to sleep for days.
Later you can provide the paper on the proper use of opioids to treat WED/RLS, but I wouldn't lead off with that, to avoid giving the impression you're seeking recreational drugs.
And it might wise to lay in a store of kratom. Good luck
