The phone rang and Mom stretched across the sofa to answer it. Ten seconds into the call she flopped back against the sofa and slapped a hand to her forehead. 'No, it's not a problem. I'll run over, pick it up, and bring it by first thing in the morning.'
Hugo was my mom's boss, and to say he called all the time was putting it mildly. […]
'He left some unfinished paperwork in the office and needs me to run over. I have to make copies, but I shouldn't be gone more than an hour. Have you finished your homework?'
'Then I'll tell myself we couldn't have spent time together even if I was here.' She sighed and rose to her feet. 'See you in an hour?' (14.50-54)
This passage gives offers up a glimpse of what Mrs. Grey has to put up with at work. Flopping against the sofa, slapping her forehead, and sighing all show that she is fed up with the high demands of her job, but she puts up with it any way to provide for her daughter.