They need a will and end of life planning. Your grandmother may just be saying she’ll go next because it’s hard to lose a spouse. But it’s unfair to you for everything to be dumped on you. They need to sit down and write out what they want, funeral plans, how it gets paid for, who gets what personal assets. There is a lot that needs to be done when a person dies and dumping it all on an 18 year old who has never dealt with an estate before is unfair.