Parent A has a hobby which takes them out of the house 2-3 afternoons per week and 2 evenings per week.
The afternoons do not affect family life as Parent A is usually back on time for the DC finishing school.
The two evenings per week are not an issue as Parent B also gets some time out once per week or fortnight depending on plans.
On the two evenings per week, Parent B picks up the slack for dinner, baths , bedtime etc as well as walking the dogs. The same happens on the one evening Parent B goes out.
Parent A is really enjoying the hobby and now wants to do this four evenings per week as well as two afternoons per week.
Parent B thinks this is unreasonable.
The DC are junior school age but one has additional needs and needs lots of support and attention so evenings tend to be chaotic. It also means that Parent B would need to pick up the slack for the majority of the week. Parent B is also chronically unwell.
Parent A thinks Parent B is being unreasonable.
WIBU?