That letter can give an interesting twist to the story if CVs want... As some people on forum suspected that Tara's revenge deeds were planned in collaboration with Jairaj...😆 that letter can support this theory... like Jairaj already found that letter & questioned Tara about it... & she explained to him everything... & something unexpected happened... (the accident) which brought the desired results... which both Jairaj & Tara were expecting...
I know this is difficult to show... because CVs have already shown repeated rantings of Tara about MJ... but how can CVs forget that letter... that would be a blooper in the story...