With regards to the maze reflecting moods, can this be underlying feelings or does it follow surface feelings?

For example, River always carries some anger and maybe a bit of sadness, but she's also excellent at hiding what she's thinking and feeling, sometimes even from herself. So like, can I plague her with a puzzling humid heatwave? Or on the flip side, would the ability to mask her actual feelings be super helpful if they wanted the weather to take a more pleasant turn?