It is a minor infraction, so, you need to discipline accordingly. So as a dom, figure out what she hates and dispense them with or without glee.

First thing that comes to mind is CD.

Sub in a corner can be a good punishment for her, especially if you continue with playtime while she watches you but cannot play with herself or cum.

I'm sure you have the spanking thing down, but, if it is something she likes, don't give it to her.

Drink from a dogbowl on the floor.

Shave you

I hate having to write reports about why I didn't do a task or why I am doing a certain task.

Let us know what you came up with.