Cassandra Peterson, a.k.a. Elvira, is making waves on social media after a video from a recent event went viral in which Peterson recounted that Ariana Grande once brought several family members and friends to an event and asked Peterson to take photos with everyone — but declined to take a picture with Peterson.

Elvira had named Ariana Grande as her worst celebrity encounter. Now, the singer is apologizing to the Mistress of the Dark.

Coming from the beloved Mistress Of The Dark, that must have sting. Yesterday (October 20), Ariana Grande took to the comment section of Elvira’s Instagram post (viewable here) about the exchange to issue an apology.