@Sadpera
Yeah people cry loli at the drop of a hat these days, I couldn't make sense of it at first too, but now I think I have it figured out. The term loli can be translated to child or childlike, meaning it can be used to describe someone who is literally a child, or someone who possesses child like qualities. While obviously Tatsumaki is an adult, as you said she is a small women. Having a small stature is a childlike trait, therefore Tatsumaki can be considered a loli of a sorts.
Now here is a more important question if Tatsumaki is a loli because she is short, does that mean Gimli is a shota? If so does that make Legolas a shotacon?