My Grandad (mums dad) died yesterday 
Do I send my own mum and Grandma a sorry for your loss type card?
In our family we do tend to give each other cards a lot for all occasions, but not sure if it's odd when it's my family and obviously I am grieving for my Grandad too. I don't feel like I should send one to my siblings though.
My Grandparents sent me and siblings a sympathy card when we lost our Dad, obviously he was their son in law once, but my parents were divorced long before he died and my GP and Dad were't really in touch if that makes sense.