Don't go there... SHE has a "Death-Box" with all of her requests and bequests clearly stated.Start asking if her will is up to date and is she sure you are main beneficiary.
Also, ask whether she wants cremation or burial and what flowers she wants at the service.
No service, no casket, just cremation and ashes buried in our garden and a party to celebrate her passing.
We have mirror-wills at this stage.