Yep. Soon the judging committee will question the incredible results and start an investigation. Then they will discover that hundreds of bots voted for Dawn. Soon she'll be ostracized from the local art community, and then the entire art world. Banksy will create a 100 foot high piece showing Dawn as a Victorian slum boss just across the road from their kitchen window.
Eventually Dawn will grow distant to her husband, and eventually stop speaking to him altogether. He'll try and put on a brave face for the kids and tell them that mummy is just working some things out. They'll ask why mummy gets vegetables hurled at her when they go to the shops, and why that nasty old lady called her a "cheating bitch". Daddy won't know how to respond.
Before Christmas he'll go out and buy her some fancy new brushes. Something to maybe kickstart what once was her favourite past time, but had now become nothing more than a crumpled box hidden under the stairs stuffed with old paints and voodoo Kermit dolls filled with pins. He'll return from the shops, earlier than expected, wondering why there's a great big Lamborghini tractor in the driveway. As he opens the door he hears from upstairs, in the room he and his wife used to share before she started locking the doors at night, the sounds of deep moaning and screams of "hurl me up the arse like yer wan."
Resigned, he'll meekly lie down on the old wicker sofa inside the conservatory that has acted as his only comfort at nights for the last four months, and cry himself to sleep once more.