Confusion

My supervisor mentioned she would like me to work next Friday and after Boxing Day, so I left her a note to ask her when exactly she wanted me to work.  (We've been working different shifts so I often don't see her.)  I haven't got any word back stating weather or not I'm working those days at all or if I am, what days, so I'm not sure what's going on.  I'll have to check on the schedule when she's working, and hopefully on Friday I'll be able to talk with her in person to see what's going on.