G.♣.
I agree with you that trying to get her to drink something is pretty important. You mention the bottle, but have you tried a sippy cup or a straw cup? Maybe you could find a fun one with a silly straw? Since she's 1 year old, you might even be able to try a regular cup if you are patient and hold it for her. You could also try popsicles. Those won't give her a lot of liquid, but they will give her some.
You mention she eats bread, meat, cheese and egg. When she does eat these, is she feeding herself? Do you think she would be more open to finger foods? Both of my sons were very independent eaters. Once they hit 10 months, neither one of them wanted me trying to feed them anything. The only way they would eat was if they could feed themselves. So I just kept giving them finger foods, even if it got messy.
It's important for you to try and relax. Make a list each day of everything she did eat or drink so that you can bring it with you to the doctor if you need to go back. For now, just keep trying. If she's been sick, she might just need a little more time.