I work as a busser and that means I just clean tables and make sure the next person can sit on the table and eat

So, like, I'm doing my job and some random lady (She is obviously out of her own mental state) comes in through the door talking to herself, and to me I was already on a red flag mode, but I didn't think too much of it because I thought she would have some sort of caretaker, FROM WHAT I THOUGHT. but anyways, about an hour or two goes by and she is still there, except I found out she was sleeping at our booths! BRUH!!!!!!! and so I call a manager, but before I even pick up the mic, she gets up, looks at the table she was sleeping next to and THROWS THE WATER ONTO THE TABLE AND STARTS WIPING IT DOWN!!!!  So I was pissed, but again a manager came and began talking to this lady.... two minutes goes by and she finally buzzes off, but like I talk to my manager about this and he goes, " Yeah, she is nuts, she was talking about how her children who came here made a mess) MIND YOU SHE DIDN'T COME INTO THE RESTURAUNT WITH ANY KIDS OR EVEN ATE HERE!!!!! so then she just likes waltzes on out of the store and then just starts dancing in front of the window and a bunch of our customers start laughing and just watching her, and after like 4 mins of dancing she just walks off...... I wish I was joking about this