She’s moaning that she doesn’t feel well enough to go to London today? Even though she was away at the weekend? If she wasn’t ill, she’d (probably) be at work and therefore possibly not able to go to out later anyway. Because she’d be tired from going to work, or maybe having to do some overtime to get things done, or maybe having to head home straight from work to look after family/cook/clean, etc. It’s not just having cancer/being ill that stops people from bobbing up to London (or going out full stop ), it’s life in general. Sometimes she needs to realise that most people didn’t just go away at the weekend and then turn around and moan that two days later they can’t go somewhere else. She may have cancer but she also needs to check her privilege.