I think not only is there no one way for any individual to grieve, there's no one way to grieve people. I grieved for my godmother differently than my paternal grandmother, and when I lose my maternal grandmother (please gods may that day yet be years away) it'll be different yet.

I don't have a background in psychology, but it makes sense to me that your brain knows you've got a lot to do - you've got your kids relying on you, there's your own life to handle, and the things you have to manage around her death - and it's doing its best to get you through that. Except the thing with brains is they do things in weird ways that don't look like what we want, or understand.

As others have said - you'll grieve your way.

My thoughts are with you and yours.