Thank you Dr. HHH I appreciate your straight forward answer and that you don't feed into people's "What if" questions. That is why I posted this question to you. I really appreciate your quick response.
This question was accurately answered on the HIV community forum. Nobody in the world ever caught HIV from this sort of event. Even if the manicurist had HIV, there was no risk -- and almost certainly she does not. Just because someone has an unfaithful partner doesn't mean s/he is at risk for HIV. You do not need testing.
Let's not have any OCD-driven "yes but" or "what if" questions. There is no information you can provide that will change my opinion or advice.
Regards-- HHH, MD