<human>: Can you give me a shortened version of the text?

So I needed a few things at the supermarket. Got in my car, drove there, got out, grabbed a basket and did my thing.

A few minutes later, I was standing at the till with basket in hand. Since I had only collected a small amount of items, I stood in line for the express till. There were 3 people in front of me - the closest to me was a middle aged lady. I saw that she had a trolley filled to the brim with all manner of goods. Having been in this situation before, and bristling with frustration, I decided to bite the bullet and berate her for using the express till to buy a whole truckload of stuff. By this time, there was a fairly sizeable line forming behind me, and some of the patrons were also visibly upset, and glad that I was taking a stand.

After a short lecture, I realised she wasn't responding. In fact, I noticed she wasn't even looking at me. Almost right on cue, another woman, wearing a maid's uniform, comes squeezing past me with a bag of milk and puts it in the lady's trolley. I ask the new arrival why they are in the express line.

Long story short, it turns out the poor lady was blind as a bat and half-deaf, and seeing as it was a huge mission for her to leave the house, she had come out with her caregiver on a quarter-yearly trip to buy provisions for the next few months. Neither of them had noticed that they were standing in the express line, and I had to watch them struggle to move out of the way and join the mile-long queue for the regular till next to us.
<bot>: I ruined a blind, half-deaf woman's quarter-yearly trip to the shops by embracing my inner suburban mother.