Hi,
In absence of any other cause, also, the fact that all of you were eating the same food at home and nobody else had the symptoms. I feel
indigestion is the cause for her vomit. May be she had heavy/excessive dinner in night which did not get digested and caused the episode.
Let her take rest. Not have anything orally for some time, except for water. If she longs for let her have
cold milk sip by sip after few hours, followed by bland easily digestible food like boiled rice, curd a small serving, in case she digests milk. She can suck
Gelusil pill over the counter if she feels burning. In case she keeps on
vomiting or has loose motions, take her to your family physician. She may need injection/IV fluids to check the symptoms.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Vasudha Jayant Athavale, General & Family Physician