I agree with your analysis of Anna Royzner.
In my experience with her, she was able to make preparations in various cities and tiny villages of Ukraine prior to my visit, including appointments for us to meet various relevant personages in both categories. While we are seasoned independent travelers, it was a pleasure to be guided by her from airplane touch-down to lift-off.
She organised research in archives for us, prior to our arrival, when we were there, and continued to do research for us after we left, translating the material into English (her being a teacher of English). I was particularly impressed that she also included copies of the original material with her translations. She responds promptly to my requests.
Her knowledge of the country, of the Jewish history there, and her experiences growing up in Ukraine under Russian “assistance” added substantially to our experience and understanding. She was always pleasant with the two of us, even laughing at my poor attempts at humour. It was also touching for her to suggest foods and recipes that my ancestors would have used and about which I was unfamiliar having grown up in the USA, Scotland, and now in New Zealand.
I would have no hesitation recommending her as any category of guide, researcher, or translator in Ukraine and to any category of researcher or genealogist.
Cheers Dr Arnold Chamove BA, MA, PhD, MPhil, FIBiol, CPsychol UK, Reg Psych NZ, DSc