If it's stressing you out, it's not a minor problem.  Besides, this is exactly what friends are for ... especially Chicken Friends!
First, don't worry about even/odd numbers. The only real issue is that there not be just one. Second, most people understand about stress-induced decisions. We've all been there at some point in our lives! Maybe it's time to simply explain that you were very upset when you made the original decision, but now that the emotions of the day have subsided, you've decided to keep your hens, after all. Apologize nicely, bake them some cookies, and take them some eggs, instead. Then ... escape proof your coop and run like crazy! If you post some pictures of your set-up, I'm sure that the many creative heads here on BYC can come up with some good, inexpensive, DIY fixes for you. And don't be shy about what things look like ... we've all been
 there, too!