
Hi, I normally put collar on pup when I know I am around to just keep an eye on things, they will scratch at it as it feels different to them, but she will get used to it.
Perhaps try putting the collar on her, not too tight, but not to loose, and then take her mind off it by playing with her, she will soon get used to the collar.
With my dogs I don't keep their collars on all the time, only when we go for walks and then when we get back I take them off. :)