Sounds like reflux. My son has it, severly.
If your baby is a happy spitter, there is no need to do anything.
If your baby is like my son, and screams when the acid reflux comes up and refuses to eat, then she will need medication to block the acid.
If you are breastfeeding I recommend you eliminate all dairy and soy along with eggs nuts and fish for 2-3 weeks and see if it makes a difference. I bet it will help. Many babies have mspi (milk/soy protein intolerance) and that contributes to the vomitting.
Keep her elevated as much as possible.