Unexpected Zappos Encounter

I'm typing this with tears in my eyes. Back story: I ordered a pair of LARGE slippers for Dad from Zappos. His feet are swollen with  lymphedema and the only shoes we can get on his feet are his tennis shoes which are barely closing. So a friend recommended this brand (Old Friend) and I tried a pair of 15 wides but they were too small. I love the Zappos company - the nicest friendlist people, so instead of returning via internet I called to talk to someone. The lady that answered - Ellie - was obviously from a different country by her accent. We had some miscommunication because she thought I said I was returning these shoes for my daughter.  She said something like, "I'm sorry these didn't work for your daughter" and I got a bit prickly and said, "They are for my 86 year old father - yeah that would be a funny story to tell your coworkers about a daughter with size 16 shoes!" Anyway, she proceeded to tell me - very nicely - that she envied me that I had my father in my life. Her father has not spoken to her since she got pregnant and had to drop out of college. He told her she was his failure. I was shocked. I asked, "How old is your child now?" Her answer: "Twenty-one." I was so embarrassed and humbled by my initial reaction. The trite statement is so true that you NEVER know what someone is going through.