The fault!

I was shocked when i heard about this but it's true n i got to believe it! :

Yesterday,my friend was telling me about this story, i dont know if i'll able to narrate it as well as her but i'll try :)
Nandita had a best friend ,n she was really desperate to go out with someone. So she asked Nandita to hook up a date for her. Nandita thought of helping her out, so she hooked her up with one of her friend n her best friend was really happy :D.. So she went on a blind date with that guy at night. They were going on a bike -speeding! N there's suddenly a speedbreaker & they guy does'nt notice- her best friend dies on the spot!
n now the police claim that Nandita n that guy had plotted a murder against her best friend- which wasnt true! Now there's a case going on between them .None of Nandita's friends trust her anymore n she cries everyday at home. The guy has been drinking like hell n his parents are fed up of him. So now if the police arrest her will it be fair?

Was this a murder or a suicide or just an accident?!
Was it Nandita's fault to hook her up with that guy?
Was it her best friends fault to go on a blind date?
Was it the guy's fault for speeding?
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