Grieving is what our souls do. Don't suppress it but keep it a safe type of grieving. It varies by person but if you need to do so, then proceed.
Those who make sometimes sincere but ineffective statements will happen. Knowing this will help (because denial just exacerbates the pain). Acknowledging it lets you know where to put it.
Don't let it stop a grieving process that you need to work through. That's what I had to do when I lost both my parents. Know that some of the sincere but severely offensive statements were difficult to take. Knowing they may happen allowed me to stay balanced and not be thrown to the ground.
We are an ocean away but I send my care and concern along with sympathy to you, your siblings and family.