J.P.
I just wanted to suggest looking into your diet - your DD may be allergic to something. My DD spit up like crazy after feedings - she would soak two to three cloth diapers I used for burp rags! I later discovered she couldn't handle dairy, and so cut it out of my diet. Things improved right away! When my second started doing the same thing, I cut out dairy and he was just fine!
If your DD is on solids, be careful about what you feed her too. My DD ended up being allergic to rice - still is - so all of the baby crackers, baby cereals (most of them anyway) and baby snacks would make her very sick - to the point that she would just be vomiting yellow bile after a while until we figured out what was going on.
Good luck with your Halloween Baby!