Abhira appears to be unaware of the events that took place between Akshara and Manish many years ago. She was unaware of the reality because she never asked Manish about her mother.
Abhira will probably be surprised to learn that she has an older brother. Manish will soon disclose that Abhir is the son of Abhimanyu, not Abhinav. Since Abhira has never heard of Abhimanyu, she will be perplexed.
Given that Abhir will shortly make the most significant revelation, it appears that the dynamics surrounding his entry will shift. He would disclose that Ruhi was the real driver of the vehicle and Akshara was innocent.
It appears like Charu and Kiara would transport Abhir to Poddar House without telling the family after spotting him unconscious and lying down by the side of the road.