congratulations on the new calf and glad you got some milk into her. Did you check the field to see if the placenta was there? It may not be, but that doesn't mean she didn't expel it either, she may have eaten it. My cow had some awful discharge for over a week and I knew she expelled her placenta, but it is possible a little got left behind, she may discharge for a while just cleaning out, but keep a good eye on her, watch her temperature and don't be afraid to call the vet-it's cheaper than losing the cow. If the discharge is smelling, I'd call the vet in.
Carol
Carol