In an alternate path where Applejack had never witnessed the Sonic Rainboom during her filly-hood years, she continues to stay in Manehattan and tries her best to adjust to city life. An outsider in a world she had never known, her struggle had some reprieve when she met some-pony who would be her friend for life.
Thanks to Randompersononline134 for the story idea and their contributions and feedback!