Robin had been working both her own as well as her friends shifts, be cause her friend was sick. She was exhausted when she came home from work.
I can't wait to go to bed tonight. I am exhausted. You've been working pretty late lately. I am covering my friend's shift at work while she is sick. That must be very hard. When do you expect her to return. Soon hopefully. I can't take it for much longer. You deserve all the rest you can get,.