See if she'll sip broth from chicken soup?
Make a smoothie and if she won't drink it fresh then put it in to popsicle molds. You can do whatever you want but for some all around good nutrition: milk (soy, almond, regular, whatever you all drink) plain yogurt, frozen fruit - we usually do strawberries and blueberries and a fresh banana. For added nutrition, you could add ground flaxseed (does nothing to the flavor), a tablespoon or two of peanut butter, tofu.. etc.. the things you can do here are endless. The frozen fruit and bananna will be the flavors she will taste. If you need an actual recipe with measurements, email me directly and I'll come up with something - I've been making it so long I just kind of throw things in the blender! LOL!!
Toast a little whole wheat bread, cut shapes with cookie cutters and top with a little peanut butter or jam? Maybe if it is fun or she helps, she'll sample it?
My kids always eat when they help, so if you can think of something small for her to do, for example (I've got peanut butter on my mind this morning!) give her a plate with a little peanut butter on it, some crackers and a little butter knife or something safe for her to spread with and let her make peanut butter and cracker sandwiches.
Hope something here helps and she is feeling better soon!
M.
____@____.com