Apple runs a very fair shop, she has said to me that she tries to limit Yoko's customers, maybe the Emo doesn't. These girls are at will and can get out if the shop if they need to for errands, rest or for other things.
Yoko also usually works on about a two week interval, today she hits 15, or so, days for this shift. I look for her to leave soon until after Christmas.
I have known Apple for awhile, in fact she worked with the famous Sue many times.