Wish me Luck

My Mum has asked me to deliver the speech at my granny's funeral today. Gulp. Obviously, it's too hard a task for the children, but she thought it would be a more personal touch than if all the speaking was done by the priest and it should not be quite as emotionally taxing for a grandchild. "Granny would have wanted it" and "you're a very controlled person". Am I? I've "done" weddings before, but speaking at a close relative's funeral is a different pair of shoes altogether. Deeeep Breath.