Of course cvq. You can't cry on cue!
You might feel a bit numb, and a bit unsure.
Hard and sad news takes a while to sink in.
That is ok.
If it makes you feel more connected why don't you write about your nan?
There are all sorts of people here who would like to know about what kind of person she was. What did she look like? What did she like to do? What do you remember about her?
Thinking about her, might bring some of your feelings out, but that's okay too.