Iam so happy that you were able to bring her home and all is well. Sounds like she is settling in very quickly and making a transition to her new home.
Just a quick note about the treats......if she is only 2 lbs and you give her only a few treats she is not going to eat for you.
If she is hiding them in her bed you are not going to know if she is eating or just storing them. If she is on Caesar food (wet) she is getting some water from that so don't worry too much about her drinking a lot of water. Good play to change foods too~the sooner the better. Just do it slowly.