Some of the dolls in the Monster High toyline can be said of this trope because most of the characters are undead: first there is Frankie Stein who could possibly be made from dead teenagers, Ghoulia who is a zombie teenager, Spectra who is a ghost of a teenager, and finally there is Draculaura who was turned into a vampire ages ago.
Spectra even mentions dying in the TV special. Yikes.
Don't forget that Draculaura is 1600 years old, and has been in High School for all this time, presumably watching many different groups of friends age, move on and die. That and her relationship with Clawd (who ages naturally) could never last, because she is over a thousand years old and he is seventeen.