No matter what you, the individual will always slip away, acting like nothing happened. You are the delusional one, you either don’t have all the facts, or the facts are not correct. Around mother’s day or any holiday will hurt, but it's better to do without. Grieving for a person who is still alive and didn’t give a damn about you. This is a totally different type of grief. A type of grief that never goes away. Enjoy the holidays you have, because many don’t have that option.