You could try distracting her with something else like food or something to keep her mind off he injection so she isn’t focused on the injection, but in the food.
Hope this helps
xylocaine gel Might help! Make sure you let it sit for two minutes though :)
Have a headcollar on and turn her head away from you so she can't bite you or you can put a twitch on her nose
try to grip his mouth a little gently while giving the injection