Sounds like she is very slowly getting better. Keep up the good work!
I wouldn't give it to a horse IM, but giving an IV injection to a horse is easier than a goat. At least for me it is. I fear the above advise could stop a valuable medication from being given to an animal that truly needs it. I have given banamine to goats IM many times with no bad reactions. Nothing will drop a dangerously high temperature faster than banamine. I've given banamine to goats that were having a reaction to vaccine or iron shots that went from humped up and miserable to fine and eating hay in less than 30 minutes. It can make a goat that feels like crap feel much better. It is said to be hard on internal organs so shouldn't be used willy nilly or for long, but it can save a goats life. That is worth any hypothetical risk of using it IM to me. It says for intramuscular use right on the bottle. It says for IV only on cattle, but I bet that has more to do with slaughter rules than safety.Keep in mind if it's injectable banamine it is ONLY meant to be given IV, and can have serious side effects given IM or Sub Q! Oral is much safer.