MotherJean,
The original poster stated that the chick is still eating and drinking normally which would not indicate extreme shock or extreme pain and suffering. From what I have read so far it appears as though this young lady is taking care of her chick the best she can and admonishing her for not doing something she is not comfortable with is not necessary. We all come here for support and hopefully help, not judgement.
To splint the leg- you are really better off here if you can tell where it's broken at... Is it broken? a tendon pulled? If you think that it may be towards the top of the leg but you aren't "totally" sure, a bent Q-tip may be your best bet, followed by spraddle leg treatment. Splint the leg with a q-tip bent to the natural shape of the leg. Then, you will want to get both of the chick's legs and take a 3/4 inch band-aid and tape the legs together, with the gauze between them. (they will not be totally together, the gauze in the bandaid acts as a spacer.) For pictures of what it should look like google spraddle leg treatment and you will see. The wing should be watched for infection and cleaned. aspirin is fine for pain.