Aidee is only doing that to make you laugh and distract you. Something your Nan would have wanted to do today (make you laugh, that is -not roll in something unmentionable

).
Today is the day where you realise how much this lady has enriched your life and helped you to make you the person you are. How much poorer your life would have been without her. Yes it is a sad and potentially stressful occasion. Remember though, we shed tears for ourselves, not the person who has died. She is fine now, strong, happy and will be looking out for you for the rest of your life.