Basically, to start, Izzy has le power access a “Reflection Dimension” somewhat similar to the one Luz went to in that one episode. She is able to spy, teleport, or just hide away in this dimension. Instead of cubes floating around, it’s just anything that has a reflection showing up as glowing white objects. An example would be if she jumped into a lake, she would be transported to this dimension, and able to show up in the reflection of the lake. It’s worth mentioning that she has gotten stuck in this dimension loads of times, for long periods, to the point she always carries around food and water. I’m forgetting some details, but that’s all I have. Feel free to ask questions. Also, S. Is Izzy’s last name in short, because I’m too tired and too lazy to think of last names that start with S right now.
Drawing of Izzy: https://scratch.mit.edu/projects/807824534/