That woman is loco! 
After what that woman went through I would guess she is mentally unbalanced and not given any treatment for over coming her experience.
In the Video she is so very calm defacing the poster and spraying some of the walls next to her, not one sign she had any idea what she was doing was defacing private and public property. Sad, she only sprayed the woman with the camera was when she got in her way.
I just pray this woman gets the help now she should have received after her unbelievable attack.