Should it worry us that one of O's favorite cats is evil unleashed (well, tripod unleashed...)?

Goblin looks like an amorphous black blob with eyes, preparing to suck the soul out of poor Olivia...
...or have I been watching too many horror movies?

No, you didn't watch too many movies. She's not quite amorphous, but she is planning on sucking the soul out of someone. Either that or tripping them as they go down the stairs and then feasting on their entrails.