My wife thinks a random stranger bought her first painting four years ago and launched her career, but it was actually me

Four years ago, my wife was on the verge of abandoning her art completely. She had spent months pouring her soul into oil landscapes, set up an online shop, and had zero sales for nearly half a year. One Sunday night, she sat on our studio floor crying, saying she was delusional and was going to pack all her brushes away. It broke my heart. The next morning, I reached out to an old college buddy living across the country. I transferred him seventy bucks, had him purchase her favorite 8x10 canvas through her website, and told him to ship it to his parents' attic so it would never be traced back to me. The sheer, radiant joy on her face when that first sale notifiction popped up on her phone is something I will never forget. It completely revitalized her. She kept painting, started doing local art fairs, and now she actually sells out collections regularly. Her "first customer's" shipping label is still pinned to her inspiration board above her easel. She calls it the day the universe told her to keep going. I carry this secret like a lead weight, but I will take it to my grave before I steal that moment from her.