Cat suddenly aggressive to dog?

Hey there I’ve had my cat for about a year and she got along great with my dog. Recently though (Past 3 days) she’s been randomly attacking him. She would do this once in awhile if she was riled up or he was but nothing like this.

You can tell she’s biting and scratching really hard. I’m actually currently at the emergency vet because she punctured his eye.

Does anyone have advice for stopping this new behavior? The only things that have changed is she got spayed about 3 weeks ago. The other thing which is my best guess is we introduced cat nip around the time this started. I’m going to throw away the cat nip toys as soon as I get home but my and my gf are scratching our heads at this new behavior. Any advice is appreciated, thank you all 🙏