Ruger is sometimes cooperative and sometimes not. The best advice I've received, some of it here and some watching others do it, is to 1. Try some kind of sedative if it's a real problem, natural or script, talk to your vet. 2. Wrap her head in a towel. 3. Often it's a two person job. 4. Handle her paws a lot. The more comfortable she is with this the easier it "might" be.
Oh yeah. 5. Good luck.