Forgiving people who wronged you is very hard, and even more so when they show no sign of recognition that they did wrong and hurt you, or of making amends.

Part of the process is working through what happened, and how it affected you, and that it was real, and that you were hurt, and you have good reason for your anger and pain. That would be a lot easier if they showed remorse and made amends, but the facts of life are that we can't control what other people do. You don't have to let them keep you from working through what you need to and letting go.

After you do the processing that you need to, either with them or without them, then forgiveness is important. Not so much for them, as for you. Not because they deserve it, but because you don't deserve to keep carrying around the hurt and anger after it serves its purpose (telling you that something happened that should not have happened). You're not obligated to forgive them, but, ultimately, you owe it to yourself to allow yourself to move on with your life and not let this keep hurting you.