I live in North Carolina. When we were interviewing for engineer positions, one woman came in dressed as professionally you can imagine. Everything was on par with what we expected of an engineer. We hired her.
When she started work, on the very first day, she showed up with TONS of piercings/tattoos all over her body. Piercings that looked terribly painful. No one said a thing. We might have stared, but overall, we were speechless. Wait. I know we stared.
As it turns out she was the absolute best engineer we had. We were lucky to have her and when she moved to New York City, we were genuinely saddened.
Would we have hired her if we had seen the piercings and tattoos? No. Would it have been our loss? Yes.
My life is enriched just by having known her for a couple of years.
I would suggest your friend dye her hair. My two cents.....