Have you ever encountered someone with mental health issues while living in Thailand?

Hello everyone.

I just have a concern not related to Thailand Visa. Instead about an unusual experience I just had while walking along Sukhumvit Road today. I thought it was just a tourist scam but it wasn't at all.

I've been staying in Bangkok for almost 2 years now, but this is the first time I encountered this. I went out to but some fruits but it suddenly rained so hard a while ago. I went under the shade, and there was a lady (who looked like a tourist) with a luggage/bag sitting nearby. But she suddenly came closer to me and started to take a video of the roof above me. Then she started saying "it's for the police, there are "spies" walking around, etc."

I was creeped out and just left the shade. I bought my fruits and after 5 mins., I had to walk back home, and I still saw her sitting there, even when the rain has stopped. Then she suddenly walked towards me, and told me "go to police station with me, terrorist,etc."

And I said "huh??" then I walked really fast, I kept looking at my back if she was following me. At first she attempted to follow me, but thankfully she went back under the shade.

I'd just like to ask if you have heard anything like this before? I'm really concerned & worried about this since it's my first time to have encountered it here in Bangkok.

Would like to know your thoughts/advice about this. Thank you so much

EDIT:

Thank you all for your comments. Really helped me make sense of this. She most probably had a delusion/psychotic episode.

EDIT:

Turning off comments. I've understood the situation now. Hope she gets help and support 🙏 Thank you all for the perspectives. Take care everyone.