If you were a friend or relation of mine, I would be sorely tempted to tell you to mind your own business.
If or when, a person, either due to age or infirmity, feels they are not long for this world, it is no business of anyone else's which pleasures they wish to indulge in, as long as these are not illegal.
Would you be just as censorious if the realisation that she is mortal and like everyone else will die one day, had made her write or re-write her will, pay her funeral in advance, or start going to church?
Any of these choices can frequently be encountered once we come to terms with the fact that we have undoubtedly lived the longest part of our lives, and that there is no knowing how much time is left us and we intend to use it as we please.