I can't believe she didn't mention her weight being the problem, not once did she say she suspects it could be that, instead self diagnosing arthritis! She went away for 3 weeks, had 3 weeks off work, come back a massive 15lb heavier and all of a sudden has a knee problem? Surely she cant not see that connection. Her knees are literally giving way at carrying such a massive weight load. Why not get a taxi to the train station. then from the train station to the office door? That would't cost must and she already has her train tickets...no because she won't get up earlier and leave for work a bit earlier as apparently that idea of leaving earlier is "ridiculous".