I am off to get my vaccination today. If Jack were truly in the at risk group she would have at least had an appointment by now. We would have heard if she had, so can assume she is still waiting. She is not immune compromised.
I have had a quick look at the podcast (after 38 minutes and with no sound) to see the figures in the background. I conclude that the person in the dark coat is her son, the woman in a red jumper with long ponytail is someone that has called to pick him up to go to his father's, possibly his stepmum.
He spends weekends with his dad, so probably gets collected. It would account for him having his coat on ready to leave as soon as his mum gets off the podcast. He can't wait to escape.