A hurt is a hurt and needs healing – no matter if it was an accident or done on purpose. We must apologize for any hurt that we inflicted.
If someone was physically hurt, their body needs to heal – no matter how they got hurt, no matter if it was done by accident or intentionally.
In the same way, if someone was emotionally hurt – no matter if the hurt was inflicted by accident or on purpose – the hurt needs to be healed.
If something you did hurt another, you must apologize. No matter if you did it on purpose or not. No matter if the other totally misunderstood your words/actions. No matter if they are more sensitive than you think is reasonable.