In the video clip (2021-07-23), it looks like a powder is added to the water, and the small bottle is emptied. It seems the small bottle is just used for keepin

In the video clip (2021-07-23), it looks like a powder is added to the water, and the small bottle is emptied. It seems the small bottle is just used for keeping in her pocket, and she might refill it during the day. He might have received a cocktail of things through various foods and drinks. Vitamin D through cooking/chili oils seems worth investigating? Though it might be impossible to prove she did it.