Well, aside from a few off-hand references this seemed (to me) barely a HPL mythos story. That is not to say I didn't enjoy it, because I did. I liked how the author chose to focus more on the characters, particularly Kelly, and her behavior in light of her family turmoil. Certainly the "family curse" could have all been a myth or metaphor the entire time and this was the story of a teenage girl trying to thrive and make sense of things within the context of a broken family. In fact, the more I think about it the more I think that this is what the author was going for... the psychology of people in transition, people coping with themselves and others in a time of instability. What is a "cult" if nothing but another form of family? I took from it that Kelly and Sarah looked at these rumors from their grandfather's era as a fixation on stability, the legacy of an unknown 'elder god' family that once was and they could latch onto. "Zombies are a type of living" was one line, the empathy towards the dead cockroaches, the imagining of swallowing/controlling/becoming one with them and something bigger and more ancient than themselves.
I was certainly perplexed to see this story not only on Drabblecast but also closing out HP Lovecraft month because of its subtlety and lack of overt weirdness. It felt very 'literary' if that makes sense, but not without creepiness, and also sincerity. Part of me will always wonder what horrible thing Kelly's mom did, that's for sure.
A Jetson Your Llama! I never said that it was a Mexican McDonalds!