Robin had been working her own as well as her friends shifts,  because her friend was sick. She was exhausted when she came home from work.
I'm so tired. How long do I have to keep taking over your shift? I know, I'm sorry! I have a virus so I don't know how long I'm gonna be sick for. Yeah, well, thankfully we are talking over the phone and not in person. I wouldn't let you come near me right now! I know. Well, I hope you feel better soon. Karen and Jack really miss you and so do I! It shouldn't be too much longer now...I hope. Thanks again for covering for me.