For those who have lost a loved one, have you ever had the experience where dealing with their death is more difficult years later (then, say, right after they had past away)

It’ll be two years this month that my Mom died. I am finding it harder to deal with now. In fact, I don’t even want to think about it. Especially, the images that pop into my head of her when she was ill. I am wondering why it is more difficult now? I talked to my sister about it and she feels exactly the same way.