Have you asked a pediatrician if she can be given Tagamet or any other suitable medication to help with the reflux (Gastro Esophageal Reflux Disease - GERD). A pharmacist at Longs can show you a liquid that is used for gas - that can sometimes push the food and acid up. Also, there is a powder that can be used to thicken the formula. But talk to your pediatrician first. Keep calling him or her if the problem does not go away. There are also many websites on Google where you can get more information. Type in: GERD in infants
Yes, babies outgrow the problem. It is quite common. It takes some time until babies gastro intestinal systems become organized. They did not need it while they were still in the womb. My grandson had it and it took several weeks and experiments with medication and thickener and schedule changes.
Keep her upright after her feeding for 30 minutes so the food and the stomach acid won't run back into the esophagus. Do you have a baby swing or anything where she can sleep safely on her back so her head is higher than her feet?
Good luck
I., a retired nurse and grandmother