No suggestion on clippers, I have several and don't really like any of them, so I'll be watching for ideas myself...
Are her nails black or white? Black is more of a challenge, because you can't see the quick at all. And you don't want to cut it. If you do you will have blood flowing- hence, the need for the styptic powder, though you can also use flour or corn starch. (but probably not a good idea if the dog is sensitive to wheat or corn, especially if they decide to lick their feet later)
But, as far as holding her down, I put the dog under my left arm, with their back to me, i.e. NOT facing me where they can see what's going on. Then I use my left hand to lift a leg up, and clip the nails with my right hand. I think it works best if you're looking at the bottom of the paw. Sounds awkward, I know, until you try it.
I also count the nails, so I can keep track of where I am, in case the dog wiggles away and I have to go back. The first couple of times you do it, just take a tiny bit off. Some nails grow longer, faster than others. You'll start to recognize which ones will be longer that you need to cut more off. Feather had one nail that hardly grew at all, and Cricket only has a very few that need to be cut. Hers don't grow very fast, and she wears them down on the concrete when we walk.
I also find it's helpful to have "picked" the dog's toes first: removed any little mats, dirt, cut the hair short, so you can see what you're doing, so you don't run into anything unknown, and so you don't accidentally pull hair while trying to clip the nails.
Good luck and let us know how it goes!
Mom to Cricket
Home January 29, 2012
Feather: March 23, 1994 - November 17, 2011
17 years and 8 months of Love