That puzzles me...with any rumen interruption that is the first thing to give!
Check for rumen function...you should hear grumbling, hear gasses being passed...she should be chewing a cud...if these signs are weak or not happening then I would get her on C D Antitoxin...with her tummy being painful...I would use it any way..
Her rumen doesn't sound that great, but I don't have any C D antitoxin

can I order it from somewhere, or get it from the vet?
Her temp is good...I would be sure to continue antibiotics for a full 5 days
the antibiotic he gave supposedly lasts for 5 days
Give her B complex to help with appetite and energy..
will do
offer her green leaves and hay..I wouldn't give grain right now..
sounds great
fix her some electrolytes to encourage drinking..
yup, did that
a good dose of Probiotics 3-4 hours after each antibiotic shot...to restore flora in her rumen..
on the way!