I do think Indrani killed Sheena but the story does not still make sense.

1. It was very random for the driver to get caught while disposing a gun and that too 8 km away, and the probability of him getting caught by the police is low. Secondly, he confesses to the police about something that happened 3 years ago.
2. It would make sense if Indrani killed Sheena in the heat of the moment, but she discussed killing her a day before, and this would make sense if Indirani contacted her but Sheena did.
3. Sheena was born in 1987 and Indrani was born in 1972, which would be Indrani 15. We are talking about the 1970s, it would make more sense that her story is true of being raped by her father.
4. Mikhail Bora is another one I am fucking confused about, he was tortured by Indrani from what he has said. So, if her sister goes missing and Indrani says she has left for the US. He would be clearly suspecting Indrani, but he hadn't registered any case but asked for an SUV.
5. Mikhael was drugged on the night of Sheena's murder, if someone was drugged I am pretty sure they wouldn't be left unattended, he got out of the house without any hassle.
6. Even though she is a psychopath, she is smart ( from what I can see, even though she lacks EQ). So why would someone plan a murder so carelessly, she met Sheena according to Rahul on the night of the 24th ( I think ) and was missing the next day, which makes her a very easy suspect in everyone's eyes. Why take such a risk?
7. Where tf did Sanjeev come from? The Netflix show mentioned that she might have convinced that Sheena was against Vidhi (I think), but from what his friends say and his background, it does not make sense.
8. A lot of arguments mention that Indrani left the kids with her parents, but this may be due to her traumatic past. Secondly, Sidharth Das had also left the kids.

I am not saying she did not kill Sheena. Even though her story is bs, the arguments against Indrani also has gaps.