this does sound like reflux, so I would check with your pediatrician to see if she is a good candidate for baby zantac. Reflux can be very painful and can scar the esophagus, so it is important for your physician to see her.
You can minimize the discomfort by elevating the end of her crib where her head rests to help keep the acids down in her stomach. You can also try to avoid feeding her so close to bedtime so that her stomach has time to empty before she lies down (which I know will probably mean she gets up earlier--sorry). Lastly you can make sure she has solids as her last meal instead of milk or formula, or at least thicken her final liquid meal with some rice cereal.
This could be gastroesophageal reflux. It's actually quite common in babies. Since it's so persistent, you might want to ask her pediatrician about the diagnosis and treatment.