The more I think about this the more I am sure this is why Koki will yell at Gopi.
Gopi will be talking to Rashi and mention the fact that she tried to take her own life, and Koki will overhear this, thus by angry.
She will be justified in her anger towards Gopi, they should have told the family the truth instead of covering for Rashi. It's about time Rashi faced the consequences of her actions.