Without being told, Anita knew that what she was about to do was going to affect her in more ways than one, and she would never be able to move around freely anywhere in Ludus with her head held high after doing this. But she also knew that she needed to go through such extreme measures to get both Tom's and Lucy's attention and seek their forgiveness.
How else could she speak to them? She couldn't show up at their home or office. That would be too much. She doubted they would want to see her let alone give her the chance to speak. Not after the stunt she had pulled at the spa.
No matter how long she spent thinking about it, doing this was the only way she could really prove that she was sorry, and by so doing, she could also make a statement to her mother to leave them alone.