It was not possible to explain my spouse that I can't be interrupted when I work from home. What has worked was showing her the bill for a monthly office lease

It was not possible to explain my spouse that I can't be interrupted when I work from home. What has worked was showing her the bill for a monthly office lease. I said I cannot do this any longer so I rented my own office outside of home. First she was very angry that I spent money like that "because you can work from home!", but I said that I can't because she doesn't respect I can't be interrupted. She promised that she will try not to do that if I cancel it. I did cancel (although I lost the deposit), but she stopped doing this. We agreed that I cannot be interrupted between 9 to 5 except lunch time. Classic example when money talks :)