Missing my mom

I lost my mom 4 years ago. It was a random unexpected passing, so the surprise really got to me. I’ve grieved and have came to terms with it over the years, but right now I’m really struggling with it again.

I feel so lost and I really need her right now. Talking with others isn’t the same as talking with her. I don’t know what to do.

Is this something that happens? Does intense grief just come back?