Thank you for your query
Your daughter seems to be suffering from an acid peptic disease
with or without gastro-esophageal reflux. I would suggest these measures. Plan a good exercise routine help get rid of some weight. Also prefer small frequent meals rather than heavy meals. Avoid a heavy dinner and time the dinner at 3-4 hours before sleeping. Make her sleep with her head elevated. Keep two pillows. Antacids are required and so are acid blocking agents. Visit a pediatric surgeon for the same. Avoid too much oil or spice in the diet.
Hope that helps
God bless you