Get out your nail trimmers and while you have them out give her some GREAT treat. Like, the best treat to her in the WHOLE world (hot dogs, salmon, steak) feed her a few small bites while the trimmers are in plain sight. Now pick them up and keep treating her (very small bites). Once you can pick them up and she doesn't run away, then try to touch her in a small way as if to trim her nails (giving those GREAT treats the whole time). You will eventually be able to trim her nails if you follow this method. GREAT food WORKS for almost any situation. She will let you know if you've gone too far too fast. She'll leave. If this happens go back to the step you were at BEFORE she ran away.

Hope it makes sense, I guarantee it will work; it may take time, though.