Wow, she's gorgeous!
You'll get there, with time and patience. I got my heading dog (basically border collie) two and a half years ago and he had been abused by a previous owner so was pretty shy of raised hands or sudden movements, but he's so much less scared and more confident now. Hope you have heaps of fun with River!Things to be worked on: she has a fear of being hit, so things over her head scare her (I went to brush the hair out of my eyes the other day and she flinched). She has a phobia of her collar being grabbed.