Poor little Sophia

We started the day around 3am. Sophia woke and let out some cries, but they seemed more like "All done night night" cries to me. I went to her the first time and put her covers over her, told her it was the middle of the night and everyone was sleeping. She then called out again and again I went and told her this was the last time. She had to go back to sleep. She quieted down by 5 and then Dylan started babbling. I heard Sophia again around 5.20 and grouchily got up and told her there was no George or Caillou today and that she had to wait until nap time to go to sleep again. She didn't nap much yesterday so I was afraid her sleeping was getting off track. As I was nursing Dylan Sophia sucked back a glass of water like she had been on a hot dessert all night. I got her a second cup and that was gone just as quickly. About five minutes later it all came back up. Now I am sitting here feeling guilty and mean not tending to her more caringly last night, being angry at her for being up so early when I carried her down and not taking her temperature yesterday when I thought she felt a little warm. Dylan has had the same runny nose and watery eyes too, so now I am just waiting for him to start throwing up. I feel so incompetent when my kids are sick. Like other moms instinctly know what to do and I sit here staring at them wondering what I should do - do they need water? food? What kind of food? How do I make the bad stuff go away? I think Lamby does a better job taking care of Sophia than I do.