I am sorry your baby is not feeling well again. Have you set up an authorization form for your cat sitter to get treatment for your baby and put it on file with both your vet and the one the tech works for? If not I would contact both offices to see what they need to do that. Also is there any way you can get your baby in for a vet check-up before you leave? Please make sure to let the tech that is sitting for you know what is going on. When I travel I put something on file with my cat-sitters vet allowing her to make treatment decisions for my cats and make sure to include that this does include ER visits and treatment. My friend's vet's office does know me since I use them as a back-up. You can also put a credit card on file with the vet's office for treatment if they allow it. My friend's vet does allow me to do this but my cat sitter would prefer to just deal with the costs herself and figure it out with me later. My cat sitter does have the funds herself to cover things that might happen and does not want me to be stressed out about money if something ever did happen to one of my fur kids while I am traveling.