Yes while things like a slap or a bump with a foot (say the horse is grazing and won't pick it's head up) may be appropriate there is a time and place and they should NEVER be done out of anger. Even in your previous post the second situation she just went into looking for a fight. You saw what happened.
Babying a horse doesn't get your anywhere but neither does that sort of behavior. I am glad things worked out, hopefully the girls gets her life sorted but not your problem, I am glad your horse is doing well!