Bear in mind with injuries that anything too serious and you will get sent home we are still quite near the home village. You are going to have to be able to ride after some treatment or make an early exit.
Also that things we might regard as minor would be more serious in the game situation. Elfride is good by the standards of Rohan and the soldiers would know how to treat trauma wounds I expect but there is going to be little in the way of pain relief and herbal remedies are not going to have quite effect of modern antiseptics and antibiotics.
Might I suggest dislocation as a possible injury as an alternative . You will have to be very brave little soldier during the manipulation to relocate but it would not be as incapacitating? Anyway I will try and cope with what you thow at Elfride.
But she won't be so good at the emotional stuff I guess ....