I know I am very late to the party, but maybe this is still helpful for you (or anyone else who might need an answer). You can mark the person from whose "PoV" you want to share as "Living" for a moment (though they are dead, of course), go to "Share", let the website generate a link, copy said link and set the person in question as "Deceased" again. The link will still direct to them, though they are now dead "again".