Shaky Italian Greyhound?

I’ve tried to look around for the right answer, but I just can’t.
My girlfriend raised her 2 year-old Iggy and babied her really bad. Now she is shaking about 85% of the time, and most of that time, whether she is laying down or standing, she has the paw up (which I’ve read is a “calming sign”?)
I’ve read up on making your dog more confident, but it doesn’t seem to be working? Do I have it all wrong? I’m always reading about dog training and watching Ceaser, and a lot of that seems to be working, Tasha is much more disciplined with me than her mom, but she is almost always shaking!
I guess all I’m asking is; is my dog just not confident? Scared? or something worse?
Thanks for your time!
RANGER’S LEAD THE WAY

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