I'm fine with her, so long as she doesn't do anything. The only good Horror is one that never does anything beyond their shifty little lair though.

Though hum, if she's changed into something that doesn't have any world-ending scheme or plan in mind that involves massive human sacrifice, she may be just classified as a Deity at this point. Greater Horror is a classification akin to 'High Casual' anyways. A Horror is just a Horror, after all.