Does Ruhi know Akshara was blamed for Neil?

Who told Ruhi ? and how much does she exactly know?

That the entire birla family especially Manjari, Arohi & abhimanyu blamed her for Neil 's death?

Does Ruhi know that Abhimanyu divorced Akshara after Neil's death & miscarriage and she left?

Akshu killed arohi but not Neil (?) , though yes, she is kind of indirectly responsible for his death, the way Abhimanyu is for Abhinav's death. But we can't say she killed him. 

Akshara is not responsible for aarohis death ruhi is

Ofcourse she overheard her dida saying such stuff.