Not really. While there might be a few 'Buffy Suicide Fanfic' out there, they are not common. The Buffyverse is known for its action, magic, and complex characters. Most fanfic writers are interested in expanding on these elements rather than delving into such a distressing and controversial topic. Also, many fanfic communities have rules against writing about topics like suicide in a way that could be harmful or triggering.
Buffy began as a television show and only later was adapted into comics. So, it wasn't a comic initially. The TV series gained popularity before the comic adaptations came out.
Buffy's relationship with Spike in the comics varies. Sometimes they have significant interactions and may even be romantically involved, but it's not a constant throughout all the comic series.
No, it's not really appropriate. The Buffy series is known for its action, adventure, and supernatural elements. While fanfiction can expand on the world, focusing on abuse is not in line with the spirit of the original. Also, it can be harmful to readers who may have experienced abuse themselves, as it can trigger unwanted memories and emotions.
It varies from comic to comic. Sometimes they have a romantic connection, while in others, their relationship is more complicated or not existent at all.
Buffy does have some science fiction aspects. The show incorporates magic, demons, and other fantastical elements that are common in the genre. However, it also blends in elements of drama and horror.