If she's back in NY and not hunkering down back in Korea, she's definitely not in Brooklyn. I have no leads and I regret not pushing harder on getting her number lol. One of the spas original numbers is apparently back in the hands of a civilian, so that was an awkward. I'd keep an eye out on Manhattan reviews for anyone fitting her personality or description (tho that's tough when people are still labeling women in their 40s as 25yo and any asian as Chinese).
I don't know how similar mamasans look, but if i had a feeling that the mama at Green Rivage Spa was the same woman I saw those times back at Kings Spa. Can't be certain tho. That place is kinda great, but I only went there to see one provider and never bothered looking at the others.
In her absence I have been able to find others I could hit it off with. But I'd drop one of my atfs for her again. Total package, although if she raised her rate (totally respectable) idk if I'd be as keen.