Woman in my personal space

My Sunday Strength 50 is always a full class. Recently, this elderly woman has started attending -- and she has no concept of personal space. Somehow, she always ends up next to me and will literally put all her weights and water bottle in my station. Last week, I could hardly do my TRX exercises because her bench was in the way. She obviously sees me struggling and doesn't move. Anyways, I have been working around her but I got to my station today before she came so I put my things down. I turn to get a heavier weight and next thing I know, she's moved into my section when her other side is empty. I had no where to work so I finally pulled my coach aside and told him to move her, which he did. While I wish coaches guided people to their sections more proactively, I was just happy to have a win rather than seethe in anger the whole class 😂