No, no .... Tell her you are going to ENJOY it!
Seriously, I DO enjoy working in the yard at dusk into the night.The ambiance completely changes from the day, and you really do see things differently. While there is an inherent sense of "urgency" to get the project done, somehow it is more still more easy going. Maybe because it's easier to focus on the task to be done? Once night falls, there are less mosquitoes, too.
On Christmas Eve, I went outside just to enjoy the night. That's how I noticed the neighbor's ice luminaries that I photographed.
