Thanks for all the good advice.
Update: I used one of my old boar's hair brushes on her today, and she actually let me brush her for a little while! Also, I tried clipping only a few nails over the weekend, and I actually got 3 done! I got two from her back paws and one from her front. I like the idea from simplyyorkies....I definitely should take her on a walk, tire her out, and then try to gently brush her hair (I think I may have been too rough in the past). I do try and touch her feet everyday, but she jerks them away very quickly. Anyway, I will keep working patiently on her... hopefully someday I'll be able to brush and clip her nails all in the same day!
