First off, don't beat yourself up, we all make mistakes, just roll with the punches and move on. How hard to repair wood damage, hard to tell until you really see what has to be done. If you are handy, you could probably do it yourself and save some money or take the camper somewhere and let them do it . If you do it yourself, take pictures and document how you took things apart so you can see how it goes back together. Measure the wood you remove best as you can for replacement. Other option is to sell it. Think things over and decide what to do. Good Luck.
2020 Cherokee Wolf Pup 14CC
2017 Chevy Colorado Z71 4x4 3.6 L