Take the kids. I hate when people wrap kids in bubble wrap thinking they are too young. Shes their nan, there is no such thing as too young!
The only qualm will be how disruptive said child can be but that can be rectified by taking child out of the room/service to quieten down. Ive seen babies at funerals and no one batted an eyelid!
Children wont be scarred for life from seeing a roomful of people crying for one day. Its hardly going to affect them. Its one day.
I went to my first funeral aged 4 (my grans).
Mum just told me to behave. I even remember placing a flower in grans casket amd touching her face (im asian, we have open casket and cremations).
It hardly scarred me for life. In fact i appreciate that i was exposed to this so young. It meant i could deal with death a bit better as i grew up, and when i had a more conscious and understanding mind, i was able to handle going to funerals of other close family members (grandpa, uncle etc aged around 12)
My mil passed away 18 months ago,her 21 year old grandson didnt attend her funeral. Because 'he is too young, its gonna really scar him to see her lying there in her casket'.
I found this utterly ridiculous and frankly i was disgusted that my sil thought at 21 her son wouldn't be able to handle a funeral. For his own nan.
Take the kids. Let them say their goodbyes. You'll look back and youll always know you gave them that chance x