Donkey Kong: Pauline Edition

My three year old daughter and I play a lot of old games together. Her favorite is Donkey Kong. Two days ago, she asked me if she could play as the girl and save Mario. She s played as Princess Toadstool in Super Mario Bros. 2 and naturally just assumed she could do the same in Donkey Kong. I told her we couldn t in that particular Mario game, she seemed really bummed out by that. So what else am I supposed to do Now I m up at midnight hacking the ROM, replacing Mario with Pauline. I m using the 2010 NES D