>Twiggles tolds her changing a gender is too hard a complicated for a unicorn
>She takes as a challenge
>Now the alicorn amulet is destroyed is even more difficult
>She keeps trying and trying
>After years of test and error she somehow achieves it
>But partially
>She is still the same
>Except in the crotch area
>Full male package
>She tries to revert it but is worthless
>Too proud to ask for help to Twilight and Starlight
>Instead she keeps tell everypony is part of her identity and how is even proud of doing such a supposedly imposible magic task
>She gets used to having said body parts
>Even gets proud of it and doesn't mind anymore