That's so great and so exciting! I don't have by arms done, but I can tell you that it doesn't feel like separate needles as much as it does like a knife cutting. And that sounds very dramatic, but really the pain is totally bearable. At worst it burns a bit, but it most definitely does not feel like getting a needle poked into your skin over and over. I would tell your friend that pain is part of the process, and that its so different from getting pierced or getting a shot that she does not need to equate them in her fear of needles. I hope that helps!!