@acaudpdrkkl2015 So parent A has two options at this point: Let things get to this point and then get upset at Parent B, which changes nothing. Parent B is still leaving, the kids are still with Parent A, the issue is not resolved.
Let's be clear here, the way Parent A addressed this problem was NEVER going to solve the issue - both this particular time, or if there is an underlying problem with being the default parent because of the WFH situation. This is picking a fight when it isn't necessary. If they had talked about it beforehand and Parent B backed out of what was agreed on, or even if Parent B during the talk was unwilling to listen to the other person's needs, that's something to work on. For all we know, Parent B believes that it's no big deal that the kids are home for one day while Parent A works from home because it's two teens and a 3rd grader - which many working moms here probably would agree with, given that it's not an uncommon scenario at all.
Again, does it matter who is shittier? Does OP feel better to know that the other parent is MORE in the wrong? Or is OP actually interested in solving the problem and addressing the underlying issue going forward? I know this is Reddit, where people post to just win brownie points, but this is not AITA and
it doesn't matter to the kids who sucks more if ESH. Again - now that the problem has
already occurred because neither communicated well beforehand, do you throw accusations at your significant other as they're leaving the door, or do you reflect on what you can do better, what they can do better, and both sit down to address it as adults?
They are both being irresponsible for care, her not walking out of the house is irrelevant. You're the one who brought up the scenario of both parents working out of the house and trying to argue that whoever walks out first is "in the right" when in fact that scenario shows very much why
both are in the wrong. So 1) what went wrong and 2) how can they fix it.