HI Fennho,
Im so sorry you and your baby are having some of the same issues we are.
If she is not crying she when she spits up then I think she is not in pain. Mine used to cry at the breast and arch their backs and spitup, now they just spit up. So I think thats what they mean by happy spitter, but I gree theres nothing really happy about it!
You may want to look at this website:
kellymom.com :: Spitting Up & Reflux in the Breastfed Baby