Visenya Stark Targaryen Borgia (Borgia Faith and Fear and Game of thrones crossover fanfiction)

What if R+l=j
What if j had a twin sister who married Cesare Borgia
What if the daughter of Charlotte and Cesare was called Visenya instead of louise
What if charlotte died in child birth.
What if Visenya grew up with her great uncle Ned
What if Visenya died at the red wedding
What if she was brought back by the lord of light who told her who her parents were.
What if she accidentally went back in time to when her father is about to sacrifice his first son.
What if she becomes her fathers assistance without him knowing about her being his daughter.
What if she had magic
What if she could drink wildfire like it was wine
What if she worshipped the lord of light
What if she wore a ribbon around where her slashed throat was.
What if Rome and Westeros were different realms so no one knew what the other one was so how did charlotte get from Westeros to Earth and how did baby Visenya get back to Westeros
And how did big Visenya get back to Earth