By “persons”, she means “the voices in her head”.
Parkinson-related delusions are no laughing matter; feel bad for her.
I watched a few minutes of the NY Times interview. She seemed coherent to me, a lot more so than Biden. However, watch her hands. She has been trained to clasp her hands when not gesturing. Her election night failure to greet her supporters is eyebrow raising. She was either drunk on her ass or had a medical condition like Parkinson's. It could have been both, too...