I found this on webmd - hope she's feeling better soon (and that you don't catch it too!

)
http://children.webmd.com/tc/nausea-and-vomiting-age-4-and-older-home-treatment
After vomiting has stopped for one hour, drink 1 fl oz of a clear liquid every 20 minutes for one hour. Clear liquids include apple or grape juice mixed to half strength with water, rehydration drinks, weak tea with sugar, clear broth, and gelatin dessert. Avoid orange juice, grapefruit juice, tomato juice, or lemonade. Avoid apple or grape juice if you also have diarrhea. Do not drink milk products, alcohol, or carbonated drinks such as sodas.
If you do not have any more vomiting, increase the amount of fluid you drink to 8 fl oz during the second hour. If you are not vomiting after the second hour, make sure that you continue to drink enough to prevent dehydration.
When you are feeling better, begin eating clear soups, mild foods, and liquids until all symptoms are gone for 12 to 48 hours. Gelatin dessert, dry toast, crackers, and cooked cereal are good choices. Try to stay away from strong food odors, which can make nausea worse.