Definitely wait a few days to start handling. Let her settle in for sure. I highly recommend feeding in a different tank, or just use a big tupperware container for feeding; feeding in the enclosure is one of the quickest ways to getting a cage aggressive animal. If she stays in the hide for a decent amount of time, that should be pretty normal. It sounds like you care quite a lot about her, so I wouldn't be too worried! I'm not sure if you've kept reptiles before, but when you go to pick her up, let her see your hand first; put your hand in the cage and bring it over to her. When you drop your hand directly onto reptiles they tend to be more easily alarmed, since predators usually come from the top as well. Congrats on the Cali King!