Because Betty has never been clipped (and remember, she hasn't even been halter broke for long), I decided to let my other horses "show" her how it's done. Whenever possible, I try to let my other horses do the work for me.
So rather than pulling them out of the herd to clip them, I went ahead and just haltered and clipped them right there, with everyone trying to nose their way in for attention. Of course, it's not all that fun for me, or the most efficient way to get things done, but because Betty is such a follower, and so curious and friendly, I figured she'd see everyone else not worry about the clippers and hopefully follow suit.
Paula, Bambi, and Fabian (Eddie's babies) are all super-easy to clip. It's just something that doesn't bother them at all.