What about....
Died peacefully in his/her sleep?
Or, .... Died unexpectedly.
Sings of sudden heart issues.
Are you still seeing the same amount of .... after a courageous battle with..... ?
Or, Donations can be made to the ________ Association?
Just something to look at.
“Unexpectedly” is generally the genteel coding of ODs a/o suicides in Obituaries in these parts.
Cancer seems pretty much unchanged percentage wise.