Unfortunately there really isn't a remedy but she can talk to her doctor. Some doctors will give out medicine that helps. Also eating small light meals. Eating crackers and ginger. Eating helps a lot of women. If she snacks on small things here and there she hopefully will start to feel better. Good luck to her it must be one of the worst things ever to feel sick and vomit so much throughout the day.
try to keep her well hydrated.. if not the dehydration will make her even more sick. When i called my dr to tell them how much i was vomiting they told me to go to the ER to get and IV. they also gave me nausea meds so i could keep some things down.. i had tried everything. crackers, ginger ale, sea sick bands, sea sick gum, small meals (every 2-3hrs), tea, toast, preggy pops. if nothing seems to be working call her OB or bring her into the ER
Have a couple saltine crackers first thing in the morning. Or try spearmint tea before eating.