I did not feel the need to see my mother's body when she died.
She asked to be cremated, and no service which I respected.
She was in pretty bad shape and that was not the last image I wanted
to have of her.
I did want to see my grandmother's body when she passed, however.
I think it depends very much on your personal feelings.
If you feel the closure is needed, I would go, but
if you don't want that as your last image, it is OK not to either.
One thing the funeral director for my grandmother offered
was going to see the body before the service and other people
were there--which I did--because I wanted to not have to deal
with others when I first saw her.
After that, I was able to talk to people but stayed more to the
back of the room to do that.
I'm so sorry for your loss--I'm glad is family is supporting you.