Was Therkla fridged by the story?

[Precure]

Correct me if I'm wrong (as I said earlier, it's been awhile) but I was pretty sure Elizabeth's death was special. She was killed, by the Creature, specifically to make Victor feel as alone as the Creature did (after he refused to build the Creature a bride of its own).

She was killed simply to elicit a response, whereas the other deaths had different motivations (IIRC). I think that qualifies her death for the trope, even among a bunch of other tragic deaths in the book.

What do you think was different about the creature's motivations to murder Victor's little brother and best friend? Frankenstein was always his actual target.